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Late Albian-Cenomanian paleoenvironmental and paleoclimatic reconstructions in northeastern Gondwana: Palynological perceptions Cretac. Res. (IF 2.1) Pub Date : 2024-03-15 Ahmed Mansour, Jian Wang, Wolfgang Ruebsam, Sameh S. Tahoun, Lamia A. Abdelhalim, Mohamed S. Ahmed, Xiugen Fu
The late Albian-Cenomanian (100.5-93.9 Ma) is considered a greenhouse world without permanent ice caps and with high eustatic sea levels. The high sea-level led to the flooding of low-lying coastal plains and the formation of extensive shallow shelf seas. Depositional conditions and ecosystems at these marginal and shallow shelf settings were affected by changes in environmental conditions, such as
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Revision of the plesiosaur Polycotylus sopozkoi from the Southern Urals (Russia) confirms the wide distribution of Polycotylus in the Late Cretaceous of the Northern Hemisphere Cretac. Res. (IF 2.1) Pub Date : 2024-03-13 N.G. Zverkov, D.V. Grigoriev, I.A. Meleshin, A.V. Nikiforov
Polycotylids are among the most common plesiosaurians of the Late Cretaceous, however, in Eurasia their findings are rare and fragmentary. In 2016, a partial polycotylid skeleton from the Upper Cretaceous of the Izhberda quarry in the Southern Urals region was described by Efimov et al. as a new species, . Here we revise this holotype specimen and show that many characters initially proposed to distinguish
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New fossil caddisflies (Trichoptera, Dysoneuridae) from the Lower Cretaceous of Inner Mongolia, China Cretac. Res. (IF 2.1) Pub Date : 2024-03-13 Jiawei Chao, Jiajia Wang, Chungkun Shih, Dong Ren
A new caddisfly species, sp. nov., and a Dysoneuridae gen. indet. sp., are described and illustrated, and Sukatsheva, 1982 is redescribed, based on 13 fossil specimens from the Lower Cretaceous Yixian Formation of Inner Mongolia, China. This is the first report of the family Dysoneuridae in China, enhancing the geographical distribution of this family and providing reference to the paleogeography.
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A NEW ORNITHOPOD FROM THE UPPER CRETACEOUS (HUINCUL FORMATION) OF NORTHWESTERN PATAGONIA, ARGENTINA. IMPLICATIONS ON ELASMARIAN POSTCRANIAL ANATOMY Cretac. Res. (IF 2.1) Pub Date : 2024-03-11 Rodrigo Alvarez Nogueira, Sebastián Rozadilla, Federico L. Agnolín, Jordi A. Garcia Marsà, Matias J. Motta, Fernando E. Novas
The aim of the present contribution is to describe the first ornithischian species from the Huincul Formation (Cenomanian-Turonian, Upper Cretaceous) at the Pueblo Blanco Natural Reserve, Río Negro province, Argentina. The new species, named as gen. et sp. nov., can be comfortably included among elasmarian ornithopods. The new species shows humeral anatomy that is congruent with smaller members of
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New Sinoalidae (Hemiptera, Cercopoidea) in Cenomanian Kachin amber, with notes on its paleobiogeographic implications Cretac. Res. (IF 2.1) Pub Date : 2024-03-10 Jun Chen, De Zhuo, Wenqian Wang, Yan Zheng, Baizheng An
The froghopper extinct family Sinoalidae shows high paleo-diversity in mid-Cretaceous Kachin amber biota. The sinoalid genus Chen, 2020 is revised in this study. Poinar et Brown, 2023, tentatively placed in Sinoalidae with subfamily and tribe in original paper, is proposed herein to be synonymized under , leading to (Poinar et Brown, 2023) comb. nov. A new species of this genus, sp. nov., is described
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Two new species of Ghilarellinae (Hymenoptera, Cephoidea, Sepulcidae) from the Lower Cretaceous Cretac. Res. (IF 2.1) Pub Date : 2024-03-10 Yi Li, Mei Wang, Alexandr P. Rasnitsyn, Chungkun Shih, Jialiang Zhuang, Dong Ren
One new species, sp. nov., in the family Sepulcidae is described and illustrated based on a well-preserved compression fossil specimen from the Lower Cretaceous Yixian Formation of northeastern China. The new species is characterized by having a large body size; forewing with costal area obviously narrowed basally, Sc and 2r-m absent, 1-Rs short, cell 1mcu large; and ovipositor elongated. In addition
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The Barremian–lower Aptian of NE Arabia: the Kharaib and Shu’aiba formations in Wadi Rahabah and Wadi Kebdah, Ras Al KhaimahU.A.E. Cretac. Res. (IF 2.1) Pub Date : 2024-03-07 Nouf Alteneiji, Margherita Denaro, Felix Schlagintweit, Mohammad Alsuwaidi, Dominik Hennhoefer, Thomas Steuber
We present a high-resolution record of carbonate depositional facies, biostratigraphy, stable-isotope and elemental geochemistry of the Kharaib and Shu’aiba formations exposed in Ras Al Khaimah, northern UAE. This is the first comprehensive study of these deposits in the northeastern Arabian Peninsula, which have previously been studied extensively in Abu Dhabi, Oman, NE Saudi Arabia, and southwestern
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Recovering lost time in Syria: New Late Cretaceous (Coniacian-Santonian) elasmosaurid remains from the Palmyrides mountain chain Cretac. Res. (IF 2.1) Pub Date : 2024-03-05 Wafa A. Alhalabi, Nathalie Bardet, Sven Sachs, Benjamin P. Kear, Issam B. Joude, Muhammed K. Yazbek, Pedro L. Godoy, Max C. Langer
Despite its relatively limited vertebrate fossil record, Syria currently records the largest number of documented Mesozoic marine reptile occurrences among the Middle Eastern countries. In particular, the phosphatic deposits of the Palmyrides mountain chain have yielded fossils of aquatic squamates, bothremydid and chelonioid marine turtles, as well as elasmosaurid plesiosaurs. Nevertheless, new discoveries
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Crephlebia gen. nov., a new mayfly genus (Ephemeroptera: Leptophlebiidae) from mid-Cretaceous Kachin amber of northern Myanmar Cretac. Res. (IF 2.1) Pub Date : 2024-02-28 Zhi-Teng Chen, Xuhongyi Zheng
A new mayfly genus and species of the family Leptophlebiidae, gen. et sp. nov., is described and illustrated based on the examination of a male adult specimen preserved in mid-Cretaceous Kachin amber from northern Myanmar. The new mayfly exhibits close resemblance to the extant genus Demoulin, 1954, belonging to the subfamily Leptophlebiinae. This discovery enhances our understanding of the morphology
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The Jurassic-Cretaceous boundary on the northern Tethyan margin: Karpentná and Ropice sections (Outer Western Carpathians, Czech Republic) Cretac. Res. (IF 2.1) Pub Date : 2024-02-28 Petr Skupien, Miroslav Bubík, Daniela Reháková, Lilian Švábenická, Tiiu Elbra, Martin Košt’ák, Andrea Svobodová, Pavlína Rybová, Radek Mikuláš, Petr Pruner, Petr Schnabl, Šimon Kdýr, Lucie Vaňková, Jakub Trubač, Martin Mazuch
Microfacies and high-resolution studies at the Silesian Unit (Outer Western Carpathians, Czech Republic) on calpionellids, calcareous and non-calcareous dinoflagellate cysts, foraminifers and calcareous nannofossils, aligned with paleomagnetism, δC and δO, allow construction of a detailed stratigraphy and palaeoenvironmental interpretations across the Jurassic-Cretaceous (J/K) boundary. Two studied
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First Edentulous Enantiornithine (Aves: Ornithothoraces) from the Lower Cretaceous Jehol Avifauna Cretac. Res. (IF 2.1) Pub Date : 2024-02-27 Xiaoli Wang, Alexander D. Clark, Jingmai K. O'Connor, Xiangyu Zhang, Xing Wang, Xiaoting Zheng, Zhonghe Zhou
Among Mesozoic birds, enantiornithines exhibit great morphological variation, which likely reflects their species diversity, range, and overall success throughout the Cretaceous. The majority of enantiornithines come from the Lower Cretaceous Jehol deposits (130–120 Ma) in northeastern China. In contrast to living birds, most enantiornithines were fully toothed. However, the rostral lengths, appendicular
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First spider-parasitized mermithid nematode from mid-Cretaceous Kachin amber of northern Myanmar Cretac. Res. (IF 2.1) Pub Date : 2024-02-22 Haonan Fang, George O. Poinar, Han Wang, Bo Wang, Cihang Luo
Many spiders are parasitized by mermithid nematodes today, but their fossil record is very scarce. Previously, only two examples were reported, from the Eocene Baltic amber and the Miocene Dominican amber, respectively. In this study, we report the earliest fossil record of a mermithid nematode–spider association from mid-Cretaceous Kachin amber of northern Myanmar. The mermithid nematode, sp. nov
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Valanginian ammonite biostratigraphy of the La Peña del Águila section, Zacatecas State, northern Mexico Cretac. Res. (IF 2.1) Pub Date : 2024-02-20 J.R. Ovando-Figueroa, J.A. Jacobo-Delgado, M. Company, R. Barragán, C.F. Ramírez-Peña, G. Chávez-Cabello, J.A. Moreno-Bedmar
An ammonite biostratigraphic analysis was carried out for the La Peña del Águila section, Zacatecas State, northern Mexico, within Valanginian strata of the Taraises Formation. Bed-by-bed sampling yielded 208 ammonites identified in 13 taxa. The biostratigraphic analysis allowed us to identify two ammonite zones: and ; and one subzone: . These biostratigraphic units range within the lower Valanginian
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Paleoecology of the foraminifer Acruliammina longa (Tappan, 1940) from the upper Hauterivian of the Neuquén Basin (northern Patagonia, Argentina) Cretac. Res. (IF 2.1) Pub Date : 2024-02-15 M. Caratelli, P. Citton, F. Archuby, J. Pignatti
Herein the epibiont agglutinated placopsilinid foraminifer from the upper Hauterivian of the Neuquén Basin is discussed. This is the first record from South America of , already known from the upper Valanginian to lower Turonian? of North America and Europe. The studied material consists of foraminiferal tests forming macroids and encrusting the valves of , coming from poorly lithified claystones/siltstones
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A caenagnathid tibia (Theropoda: Oviraptorosauria) from the upper Campanian Kirtland Formation of New Mexico Cretac. Res. (IF 2.1) Pub Date : 2024-02-08 Gregory F. Funston, Thomas E. Williamson, Stephen L. Brusatte
Caenagnathid oviraptorosaurian dinosaurs, long considered enigmas, have now become relatively easy to recognize in the fossil record of Asia and North America. This has revealed their presence in several formations spanning the Late Cretaceous, providing new insights including showing that they were more widespread in the southern parts of North America than previously recognized. Here we add to this
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Mortoniceratinae (Ammonoidea) from the lower upper Albian of the Basque-Cantabrian basin (Western Pyrenees): New records, new taxa and their taxonomic and biostratigraphical value Cretac. Res. (IF 2.1) Pub Date : 2024-02-07 Mikel A. López-Horgue, Hugh G. Owen
The subfamily Mortoniceratinae comprises Albian to early Cenomanian ammonoids whose phylogeny forms the basis of a biozonation for the upper Albian due to their highly evolving nature and worldwide distribution. However, both morphological plasticity of the group and the known common occurrences in many condensed successions call for accurate taxonomy and stratigraphy in order to ascertain the phylogeny
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The first report of Lower Cretaceous corals from the Baghin section, west of Kerman, Iran Cretac. Res. (IF 2.1) Pub Date : 2024-02-05 Toran Khamoshi, Ahmad Lotfabad Arab, Mohammad Reza Vaziri
In the Baghin section, west of Kerman, Iran, Aptian scleractinian corals are described for the first time in relation to taxonomically related genera and species. The superfamilies are Actinastraeoidea, Cladocoroidea, Cyclolitoidea, Eugyroidea, Stylinoidea, Montlivaltioidea, Caryophyllioidea and Misistelloidea. Other macrofossil groups are echinoids, gastropods, brachiopods and bivalves and confirm
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Body fossil assemblages from the Lower Idzików Beds (Coniacian) in the Upper Nysa Kłodzka Graben, south-west Poland: Preliminary taphonomic, palaeoecological and palaeogeographical data Cretac. Res. (IF 2.1) Pub Date : 2024-02-01 Alina Chrząstek, Elena A. Jagt-Yazykova, John W.M. Jagt
From mudstones and sandstones referred to as the Lower Idzików Beds, as exposed at Stary Waliszów (Upper Nysa Kłodzka Graben, south-west Poland), a rich assemblage of body fossils has been recovered. This comprises rare ammonites (, cf. , ? sp.), nautiloids (), numerous bivalves, inclusive of inoceramids such as and , oysters (, and ) and other common genera such as , , , , , , and . Gastropods include
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Integrated stratigraphy across the Jurassic–Cretaceous boundary in the Rettenbacher section (Northern Calcareous Alps, Salzburg, Austria) Cretac. Res. (IF 2.1) Pub Date : 2024-02-01 T. Elbra, P. Skupien, M. Bubík, M. Košťák, M. Molčan Matejová, P. Pruner, D. Reháková, L. Švábenická, L. Vaňková, V. Cígler, J. Geist, Š. Kdýr, A. Lukeneder, P. Rybová, M. Mazuch, P. Schnabl, A. Svobodová, J. Trubač, H. Ucar
Rettenbacher Quarry carbonate sequence in the Northern Calcareous Alps represents highly dynamic pelagic carbonate sedimentation in the lower slope environment. The section spans from upper Tithonian Crassicollaria colomi Subzone to middle Berriasian Calpionella elliptica Subzone. Radiolarian samples belong to Pseudodictyomitra carpatica Zone. Considerable redeposition of calpionellids, organic walled
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Two new kateretid beetle species (Coleoptera: Kateretidae) with specialized antennal scapes in males from mid-Cretaceous Kachin amber Cretac. Res. (IF 2.1) Pub Date : 2024-01-29 Qian Zhao, David Peris, Jia Liu, Diying Huang, Chenyang Cai
Kateretidae is a beetle family with 15 reported fossil species, four of them with specialized antennal scape. Specialized scape represents a rare form of sexual dimorphism in Kateretidae. Here we report two new species with a special scape in males of Zhao, Huang and Cai, 2023, and one female individual of an unnamed species of . The discovery of new species provides a supplementary diagnosis of ,
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The first stegosaurian dinosaur from Gansu Province, China Cretac. Res. (IF 2.1) Pub Date : 2024-01-26 Ning Li, Daqing Li, Guangzhao Peng, Hailu You
Stegosaurs are a minor but iconic clade of ornithischian dinosaurs, and along with their sister taxon ankylosaurs form the clade Eurypoda, the major radiation of Thyreophora (armoured dinosaurs). We here report some stegosaurian materials from the Lower Cretaceous Hekou Group of the Zhongpu area, Lanzhou-Minhe Basin, Gansu Province, China. Most of the morphology of the specimen is similar to and .
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‘Changing of the guard’ amongst holasteroid echinoids in the upper Maastrichtian of the south-east Netherlands: Exit Echinocorys, enter Hemipneustes Cretac. Res. (IF 2.1) Pub Date : 2024-01-26 John W.M. Jagt, Mart J.M. Deckers, Elena A. Jagt-Yazykova
The search, over several decades, for overlap (if any) in the stratigraphical ranges of two common holasteroid sea urchin genera in the type area of the Maastrichtian Stage (south-east Netherlands, north-east Belgium), has come to an end. Here, the first examples of representatives of and are recorded from the middle portion (between flint levels 10 and 12/12a) of the Lanaye Member (Gulpen Formation)
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Developmental distribution of osteocyte lacunae in the limb bone cortex of Musivavis amabilis with a review of bone microstructure adaptations in Enantiornithes Cretac. Res. (IF 2.1) Pub Date : 2024-01-24 Martin Kundrát, Denis Horváth, Zhengdong Wang, Xuri Wang
The growth strategy of enantiornithine birds differs from other stem-group birds due to the slow and protracted growth phase that is usually recognized by the deposition of parallel-fibered bone, mostly avascular, and the appearance of resting line/s. In this study, we aimed to investigate the osteohistology of the miniature bohaiornithid-like enantiornithine bird . The midshaft cortex of the left
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A new lineage of pygidicranid earwigs from mid-Cretaceous amber of northern Myanmar (Dermaptera: Pygidicranidae) Cretac. Res. (IF 2.1) Pub Date : 2024-01-24 Ancheng Peng, Michael S. Engel, Yu Liu, André Nel
Based on a well-preserved male specimen from mid-Cretaceous Kachin amber, we describe a new genus and its type species of earwig, gen. et sp. nov. has a unique combination of traits: large compound eyes, scape shorter than compound eye length, pronotum as broad as head, prosternum subtrapezoidal, wings present and fully developed, metatarsomere II not slanted apically, pygidium with short medioapical
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New fossil genus and species of Yuripopovinidae (Insecta: Heteroptera, Coreoidea) from the Lower Cretaceous Jinju Formation, South Korea, with insights into the evolution of exaggerated antennae in the family Cretac. Res. (IF 2.1) Pub Date : 2024-01-13 Jae-Cheon Sohn, Gi Soo Nam
A new genus and species of Yuripopovinidae, gen. et sp. nov. is described based on a piece of fragmentary fossil specimen from the lower Cretaceous Jinju Formation in Jinju City, South Korea. This species is the first record of Yuripopovinidae and the only heteropteran whose taxonomic status is reliably identified from the stratigraphic layer. Its antennal morphology provides a rare example of simultaneous
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Armadillosuchus arrudai (Sphagesauridae, Crocodyliformes), Adamantina Formation (Turonian – Santonian), Bauru Basin, southeastern Brazil: Dental development aspects Cretac. Res. (IF 2.1) Pub Date : 2024-01-13 Bruno de Tolvo Borsoni, Ismar de Souza Carvalho, Thiago da Silva Marinho
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Docodontans from the Lower Cretaceous of Yakutia, Russia: New insights into diversity, morphology, and phylogeny of Docodonta Cretac. Res. (IF 2.1) Pub Date : 2024-01-12 Alexander O. Averianov, Thomas Martin, Alexey V. Lopatin, Pavel P. Skutschas, Dmitry D. Vitenko, Rico Schellhorn, Petr N. Kolosov
Docodonta are the most abundant and taxonomically diverse group of mammaliaforms in the high paleolatitude Lower Cretaceous Teete locality in Yakutia, Russia. Docodontans are represented by the tegotheriids and gen. et sp. nov., and possibly two more taxa known from fragmentary specimens (Docodonta indet.). gen. et sp. nov. shows a reduction and posterior shift of the angular process of the dentary
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New Lineaburmops fossils (Araneae: Lagonomegopidae) with contrasting color patterns from mid-Cretaceous Kachin amber, northern Myanmar Cretac. Res. (IF 2.1) Pub Date : 2024-01-12 Xiangbo Guo, Paul A. Selden, Dong Ren, Yiping Niu, Feng Zhang
The fossil spider family Lagonomegopidae is widespread in the Cretaceous period, and mainly reported from mid-Cretaceous Kachin amber, northern Myanmar. Here, two new lagonomegopid species, belonging to the genus , are described from Kachin amber: sp. nov. and sp. nov., which showing similar contrasting body coloration as other species. The compositional element of these special color patterns and
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A pteranodontid wing with traces of extensive invertebrate scavenging from the Pierre Shale (Sharon Springs Member, Campanian–Maastrichtian), east central Wyoming (Niobrara County) Cretac. Res. (IF 2.1) Pub Date : 2024-01-11 Rebecca Starkey, Michael Habib, W. Scott Persons
Here we report the associated and semi-articulated partial wing of a mid-sized pterosaur from an exposure of the Pierre Shale, in east central Wyoming. All elements suffer from compaction but are identified as those of a pteranodontid based on the warped deltopectoral crest. Most probably, the wing is that of , although the length of the ulna and of the metacarpal IV relative to that of the humerus
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Trilobated Lauraceous leaves from the Upper Cretaceous Olmos Formation, Coahuila, Northern Mexico Cretac. Res. (IF 2.1) Pub Date : 2024-01-11 Marco A. Rubalcava-Knoth, Sergio R.S. Cevallos-Ferriz
The Olmos Formation in Coahuila, Mexico has crucial information about the Cretaceous floras in northern Mexico. Its plant diversity is high and represents one of the most studied paleofloras for this region; angiosperm leaves are the main plant organs that can be found and serve as the primary source to reconstruct this paleoflora. Since a large part of the foliar diversity of this Formation has yet
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Comments on « Environmental and climatic controls of the clay mineralogy of Albian deposits in the Paris and Vocontian basins (France) » [Cretaceous Res. 108 (2020) 104342] and « Astronomical calibration of the OAE1b from the Col de Pré-Guittard section (Aptian-Albian) Vocontian Basin » [Cretaceous Res. 150 (2023) 105618] Cretac. Res. (IF 2.1) Pub Date : 2024-01-08 Jean Gabriel Bréhéret, Jean-François Deconinck
We wish to point out an obvious error made by one of us (J.F. Deconinck), and kindly reported by J.G. Bréhéret, the reason why we have jointly decided to publish this correction. The error affects at varying degrees the scientific quality and partly invalidates the conclusions of the following articles: Corentin et al. (2020) « Environmental and climatic controls of the clay mineralogy of Albian deposits
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The integrated biostratigraphy and palaeoenvironments across the Jurassic–Cretaceous boundary in the Dedina section (eastern Serbian Carpathians) Cretac. Res. (IF 2.1) Pub Date : 2024-01-08 Miroslav Bubík, Vojtěch Cígler, Radek Mikuláš, Dragoman Rabrenović, Daniela Reháková, Petr Skupien, Lilian Švábenická, Andrea Svobodová, Marcela Svobodová
Upper Tithonian to lower Berriasian carbonate sequence of the Getic Nappe System was studied near Golubac using an integrated biostratigraphy approach based on calpionellid, calcareous dinoflagellate, nannofossil, foraminifer, and palynomorph record. Calpionellids allowed subdivision of the section to standard calpionellid zones including the Colomi and Alpina subzones on the Tithonian–Berriasian transition
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Chronostratigraphy of the Upper Cretaceous succession in the Middle Magdalena Valley of Colombia (Northern South America) Cretac. Res. (IF 2.1) Pub Date : 2024-01-04 Felipe de la Parra, Camilo Higuera, Rigo Ramírez, Lina Maya, Sandra Céspedes, Nelbett Marfissi, Angelica Carreño, Tatiana Juliao, Silvia Forero
The Upper Cretaceous succession in northern South America is significant because the related rock deposits are among the most prolific oil sources in the region. Although several geological studies have focussed on this period, we still have poor knowledge of the exact deposition time of the lithostratigraphic units. In this study, we constructed a chronostratigraphic framework based on U-Pb ages and
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The Turonian-Campanian rudist bivalve succession in the Central Iberian Basin Cretac. Res. (IF 2.1) Pub Date : 2024-01-03 Javier Gil, Jose Maria Pons, Enric Vicens, José García-Hidalgo, Manuel Segura
Four rudist assemblages: lower Turonian, upper Turonian, upper Coniacian, and Santonian-?Campanian, are distinguished in the shallow water carbonate platform successions of the Iberian Basin, nowadays Iberian Range, a Mesozoic intra-continental basin in the western margin of the Mediterranean Tethys. Because of the depositional evolution of the Iberian Basin, the occurrence, abundance, taxonomic diversity
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Integrated study on the base of the Coniacian Stage in the Caucasus Cretac. Res. (IF 2.1) Pub Date : 2024-01-06 Lyudmila Kopaevich, Elena Yakovishina, Sergey Bordunov
The continuous Turonian–Coniacian succession, exposed in the Shapsug quarry (northwestern Caucasus) composed of rhythmic carbonate strata of the hemipelagic and pelagic type, have been studied comprehensively. Foraminiferal zones, corresponding to the zonation recognized in the Coniacian Global Boundary Stratotype Section and Point (GSSP), have been identified. Chemostratigraphic (isotope) studies
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Biostratigraphy of Liminic Ostracoda (Crustacea) from the Quiricó Formation, Lower Cretaceous of the São Francisco Basin, Minas Gerais State, Brazil: An approach on paleozoogeographic evolution of Gondwana Cretac. Res. (IF 2.1) Pub Date : 2024-01-05 Amanda M. Leite, Dermeval A. Do Carmo, Lívio R.O. Gonçalves, DangPeng Xi
The present study is the first biostratigraphic framework based on limnic ostracods for the Quiricó Formation, São Francisco Basin, Brazil. Three sections located at Minas Gerais State were approached: 1. Stratotype section of the Quiricó Formation, Presidente Olegário County; 2. Hypostratotype section of the Tereza Farm, João Pinheiro County; and 3. São Bento Farm section, Carmo do Paranaíba County
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First record of Reticulinella? kaeveri in the Laffan and Ilam formations (Zagros fold and thrust belt, SW Iran): new constraints on the chronostratigraphic calibration of the Arabian Plate sequence stratigraphy Cretac. Res. (IF 2.1) Pub Date : 2024-01-04 Seyedabolfazl Hosseini, Mariano Parente, Davoud Morsalnejad, Mohammad Reza Asnafi, Maryam Shafiezad, Maryam Akhtari, Meysam Hemmatinasab, Mohammad Parandavar
Over the past two decades, sequence stratigraphy has proven to be a valuable tool in addressing challenges arising from the inconsistent application of lithostratigraphic nomenclature across diverse geological provinces. It has been particularly successful in achieving regional correlations within the Cretaceous deposits of the Arabian Plate. The key sequence stratigraphic surface in the currently
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Revalidation of Myobradypterygius hauthali Huene, 1927 and the phylogenetic signal within the ophthalmosaurid (Ichthyosauria) forefins Cretac. Res. (IF 2.1) Pub Date : 2024-01-04 Lisandro Campos, Marta S. Fernández, Victor Bosio, Yanina Herrera, Agustina Manzo
In the last decade, several new Cretaceous ichthyosaurs have been described and/or redescribed, challenging the traditional concept that, during the Cretaceous, ichthyosaurs were abundant but not diverse. Here, we redescribe the holotype and referred specimen of ‘Platypterygius’ hauthali Huene (1927) from the Barremian of Argentinean Patagonia and compare its appendicular anatomy with that of a referred
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New remains of Mosasauroidea (Reptilia, Squamata) from the Upper Cretaceous (Santonian) of Aude, southern France Cretac. Res. (IF 2.1) Pub Date : 2024-01-03 Martial Plasse, Xavier Valentin, Géraldine Garcia, Guillaume Guinot, Nathalie Bardet
New mosasaurid remains (Squamata) were collected from various Santonian localities in the Sougraigne area (Aude Department, southern France). Cranial bones, some vertebrae, two scapulae and a phalanx are assigned to the plioplatecarpine Platecarpus cf. tympaniticus, while pelvic bones, two vertebrae and a femur (?) are referred to Tylosaurus sp. Tooth marks made by sharks, teleosts or mosasaurids are
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Diagenetic patterns in Cretaceous belemnite rostra from Southern Tibet, China: Evaluating criteria to differentiate well preserved and altered fossils Cretac. Res. (IF 2.1) Pub Date : 2024-01-03 Zheng Fang, Matthias Alberti, Juan Li, Yanhong Pan
Belemnites are valuable for reconstructing Jurassic and Cretaceous seawater temperatures, but their reliability hinges on the preservational quality of the fossil materials. Methods for assessing the preservational quality of fossils vary among studies. This research examined altered Cretaceous belemnites and seemingly well preserved Upper Jurassic belemnites from Tibet, aiming to evaluate established
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Fossil Xenoxylon (Coniferopsida) wood from the Upper Cretaceous of Heilongjiang, China: Evidence of a tripartite plant-arthropod-fungal association Cretac. Res. (IF 2.1) Pub Date : 2024-01-03 Fengxiang Liu, Philipp Hiller, Michael Krings, Benjamin Bomfleur, Xi Wang, Yeming Cheng
Silicified conifer wood assignable to Xenoxylon meisteri from the Upper Cretaceous of northeastern China provides evidence of the presence of wood-degrading fungi and xylophagous arthropods, and also indicates the existence of a relationship between fungi and arthropods. Evidence of arthropod activities occurs in the form of vertical and horizontal borings that are lined on the inside with small coprolites
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The ontogenetic status of a small hadrosauroid dinosaur from the uppermost Cretaceous of Bulgaria, and implications for the paleobiogeography and assembly of European island faunas Cretac. Res. (IF 2.1) Pub Date : 2024-01-01 Vladimir Nikolov, Docho Dochev, Stephen L. Brusatte
During the latest Cretaceous hadrosauroids were the most numerous and taxonomically diverse herbivorous dinosaurs on the European island archipelago, including diminutive non-hadrosaurid hadrosauroids and lambeosaurine immigrants from Asia and, possibly, from North America. In recent years the existence of small-bodied adult hadrosauroids (or ‘island dwarfs’) in the Maastrichtian of Romania and Spain
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First definitive record of Acrocanthosaurus (Theropoda: Carcharodontosauridae) in the Lower Cretaceous of eastern North America Cretac. Res. (IF 2.1) Pub Date : 2023-12-28 Matthew T. Carrano
An incomplete theropod skeleton (USNM 466054) from the Lower Cretaceous Arundel Clay of Maryland, USA is described in detail. Although fragmentary, it possesses a number of features that permit assignment to Tetanurae and Allosauroidea, as well as an autapomorphy of the carcharodontosaurid Acrocanthosaurus. As such, it represents the first well-founded record of this taxon in eastern North America
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A new genus of small polycotylid plesiosaur from the Upper Cretaceous of the Western Interior Seaway and a clarification of the genus Dolichorhynchops Cretac. Res. (IF 2.1) Pub Date : 2023-12-24 Robert O. Clark, F. Robin O'Keefe, Sara E. Slack
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Paratropical rainforest from the Olmos Formation (upper Campanian), Coahuila, Mexico Cretac. Res. (IF 2.1) Pub Date : 2023-12-24 Naylet Karen Centeno-González, Garland R. Upchurch, Gerardo Zúñiga, Héctor Porras-Múzquiz, Emilio Estrada-Ruiz
We present new data based on physiognomic analysis of the Olmos Formation leaf flora, indicating it represents a paratropical rainforest with an inferred mean annual temperature (MAT) of 20–24 °C and mean annual precipitation (MAP) of 1210.8–2878 mm, with a growing season precipitation of 1089–1306 mm. Additionally, we found some leaves that we grouped according to their morphological characteristics
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New fossil wings shed light on Lower Cretaceous Araripechlorogomphidae and minimum age of the Chlorogomphoidea (Odonata: Anisoptera): Crato formation, Araripe Basin, NE Brazil Cretac. Res. (IF 2.1) Pub Date : 2023-12-22 André Nel, Guilherme Cunha Ribeiro
This paper presents two newly discovered fossil wings belonging to the extinct species Araripechlorogomphus Bechly and Ueda, the type genus and species of the Cretaceous ‘libelluloid’ family Araripechlorogomphidae, previously known by incomplete hind wings from the same outcrop. Araripechlorogomphus muratai is of particular interest as it is the oldest-known member of the Chlorogomphoidea and its only
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Rhabdodontid (Dinosauria, Ornithopoda) diversity suggested by the first documented occurrence of associated cranial and postcranial material at Vălioara (uppermost Cretaceous Densuș-Ciula Formation, Hațeg Basin, Romania) Cretac. Res. (IF 2.1) Pub Date : 2023-12-19 János Magyar, Zoltán Csiki-Sava, Attila Ősi, Felix J. Augustin, Gábor Botfalvai
Associated and partly articulated cranial and postcranial elements of rhabdodontid ornithopod dinosaurs recovered from the recently rediscovered Maastrichtian (Upper Cretaceous) vertebrate site K2 near Vălioara in the westernmost part of the Hațeg Basin (Transylvania, Romania) are described in detail. These elements come from a multitaxic bonebed discovered in the continental deposits of the Densuș-Ciula
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New pelecinid wasps from mid-Cretaceous Kachin amber, northern Myanmar (Hymenoptera: Pelecinidae) Cretac. Res. (IF 2.1) Pub Date : 2023-12-13 Zhen Wang, Yimo Yang, Chungkun Shih, Dong Ren, Taiping Gao
Five new species in the family of Pelecinidae, Abropelecinus rasnitsyni sp. nov., Abropelecinus rectus sp. nov., Allopelecinus ruoyae sp. nov., Eopelecinus strangulatus sp. nov. and Stelepelecinus minutus sp. nov., are described and illustrated based on seven specimens from mid-Cretaceous Kachin amber. The metasoma of Eopelecinuss strangulatus sp. nov. provides new material to support the first pathway
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A new cockroach (Blattaria: Mesoblattinidae: Spinaeblattina) from the Lower Cretaceous Laiyang Formation of China Cretac. Res. (IF 2.1) Pub Date : 2023-12-12 Yuchen Zhang, Lei Chen, Zhengdong Wang, Jing Fang, Cihang Luo
A well-preserved completely articulated cockroach fossil, identified as Spinaeblattina tuanwangensis sp. nov., is discovered in the Lower Cretaceous Laiyang Formation of Shandong Province, China. Compared to other species of Spinaeblattina, it possesses different shape of dark colouration patterns in pronotum, smaller forewing, rich R and M branches, and CuA with only 2 branches. The differences between
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Reappraisal of the first historical record of Aristonectes Cabrera, 1941 (Elasmosauridae, Aristonectinae) from the Upper Cretaceous of central Chile Cretac. Res. (IF 2.1) Pub Date : 2023-12-12 Rodrigo A. Otero
This contribution reassesses the first historical specimen from the Upper Cretaceous of Chile, referred to the genus Aristonectes in the late sixties. A detailed description allows an improved understanding of those elements comprising the mandibular ramus. These are found to be coincident with those of the holotype of Aristonectes quiriquinensis, with only minor differences in size, which are explainable
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The El Mizab formation (Talerhza Basin, north-west Morocco): Albian–early Cenomanian faunal diversity and paleoenvironment Cretac. Res. (IF 2.1) Pub Date : 2023-12-12 Mohamed Benzaggagh, Mariusz A. Salamon, Mohamed Oumhamed, Benjamin Musavu-Moussavou, Bruno Ferré
The Talerhza Basin is a small basin in north-west Morocco, in which the Albian–lower Cenomanian succession consists of three formations; in ascending order, the El Heifouf, Bab Lkarma and El Mizab formations. The first two units, of early–middle Albian age, comprise sandy marlstones and sandy limestones, respectively, and yield rare gastropods. The El Mizab Formation consists of an alternation of marlstones
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Palynological reconstruction of the habitat and diet of Iguanodon bernissartensis in the Lower Cretaceous Morella Formation, NE Iberian Peninsula Cretac. Res. (IF 2.1) Pub Date : 2023-12-07 Iván Rodríguez-Barreiro, Artai A. Santos, Uxue Villanueva-Amadoz, José Miguel Gasulla, Fernando Escaso, Francisco Ortega, Carole T. Gee, José B. Diez
The recent discovery of iguanodontid remains from the new Palau-3 site in the Lower Cretaceous Morella Formation is the most complete non-articulated skeleton of Iguanodon bernissartensis on the NE Iberian Peninsula. To elucidate the paleoenvironment of the Palau-3 site, a palynological analysis was carried out on matrix samples collected from around the skeleton. The palynological assemblage is found
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Two new species and new material of the family Evaniidae (Hymenoptera: Evanioidea) from the mid-Cretaceous amber of Northern Myanmar Cretac. Res. (IF 2.1) Pub Date : 2023-12-09 Longfeng Li, Jingtao Yang, Lu Yu, Chungkun Shih, Dong Ren
Two new species, Sorellevania rara Li, Shih & Ren, sp. nov. and Iberoevania nova Li, Shih & Ren, sp. nov., and a new specimen of Cretevania bechlyi Jennings, Krogmann & Mew, 2013 are described and illustrated respectively from two male and one female specimens preserved in the mid-Cretaceous Kachin amber. Sorellevania rara sp. nov. is the third species of the genus Sorellevania Engel, 2006. The placement
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A new species of Keteleeria (Pinaceae) from the Lower Cretaceous of Inner Mongolia, Northeast China, and its palaeogeographic and palaeoclimatic implications Cretac. Res. (IF 2.1) Pub Date : 2023-12-09 Yanbin Zhu, Ya Li, Ning Tian, Yongdong Wang, Aowei Xie, Li Zhang, Pengcheng An, Zhenyu Wu
Keteleeria Carrière (Pinaceae) is a small genus of evergreen conifer trees, with three to five extant species and six variants distributed across China, Laos, and Vietnam. A new species of conifer fossil wood, Keteleeria huolinhensis sp. nov., is described from the Lower Cretaceous Huolinhe Formation in Inner Mongolia, China. This species is characterized by a heterogeneous pith, endarch primary xylem
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A new species of the genus Mallecupes (Coleoptera: Cupedidae) from mid-Cretaceous Kachin amber, northern Myanmar Cretac. Res. (IF 2.1) Pub Date : 2023-12-09 Lin Wang, Zhenyu Song, Edmund A. Jarzembowski, Qiqi Lyu
A rare archaic beetle, Mallecupes cheni sp. nov., (Coleoptera: Archostemata: Cupedidae) is described based on a relatively well-preserved specimen from mid-Cretaceous Kachin amber. It is the fifth species of the genus from the same location that can be distinguished from the other 4 congeners based on the combination of rounded temples, laterally produced anterior angles of the pronotum, and extremely
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First dinosaur tracks found in the Mulichinco Formation (Lower Cretaceous), Neuquén Basin, Argentina: Paleoenvironmental implications Cretac. Res. (IF 2.1) Pub Date : 2023-12-03 Diego A. Pino, Manuela Zalazar, Ricardo E. Gómez, Maisa A. Tunik, Rodolfo A. Coria
This study focuses on the analysis of the first dinosaur tracks discovered in the Mulichinco Formation, Neuquén Basin, Argentina. The deposition of this unit occurred during the early Valanginian, Early Cretaceous, making it the oldest known record of dinosaur tracks for that period in the basin. The aim of this study is to provide a paleoenvironmental interpretation of the area and potential trackmakers
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Late Cenomanian Plenus event in the Western Interior Seaway Cretac. Res. (IF 2.1) Pub Date : 2023-12-03 Bradley B. Sageman, Matthew M. Jones, Michael A. Arthur, Igor Niezgodzki, Daniel E. Horton
The Late Cenomanian Plenus Cold Event is one of the most enigmatic paleoclimate episodes in Earth history with potential to inform understanding of global climate system variability under greenhouse warming conditions, as well as internal feedback pathways that modulate such variability. Following an interpreted massive addition of volcanic CO2 to the atmosphere and warming that led to a major ocean