-
Middle Devonian brachiopods from Qujing of eastern Yunnan, China and their biostratigraphical and palaeoecological implications Palaeoworld (IF 1.7) Pub Date : 2024-03-05 Cong-Ying Liu, Li Qiao, Kun Liang, Yue Li, Wen-Kun Qie
The Middle Devonian Qujing Formation at its type locality in eastern Qujing City, Yunnan was investigated for the first time. At the Wutaishan section, the formation is characterized by fossiliferous limestone and marls with massive terrigenous inputs. About 1292 individual specimens and several fragmented stringocephalid brachiopods were collected and systematically identified in this study. They
-
Widespread Thalassinoides facies from the upper Silurian of South China: A case study from the northwestern Hunan Province, middle to upper Yangtze Block Palaeoworld (IF 1.7) Pub Date : 2024-03-01 Xiao-Le Zhang, Yi Wang, Yu-Xuan Wang
The upper Silurian of South China records the first, and perhaps the only occurrence of widespread (spanning over 1400 km), thick to very thick bedded facies (TVTFs) after the Late Ordovician mass extinction. However, the palaeobiological, palaeoecological features and potential significance of these facies are yet to be demonstrated. A case study at northwestern Hunan Province, middle to upper Yangtze
-
The successive evolution of hexangulaconulariids and the growth pattern of carinachitiids revealed by new materials from the lower Cambrian of South China Palaeoworld (IF 1.7) Pub Date : 2024-02-29 Ming-Jin Liu, Yun-Huan Liu, Ya-Nan Zhang, Tie-Quan Shao, Jia-Chen Qin
Hexangulaconulariids and carinachitids are widely reported small shelly fossils from the early Cambrian in South China. They have relatively robust single-apertural periderms, longitudinal corner grooves that separate the faces of the periderm, and stable facial ornamentation. Although they are thought to be closely related to the widely reported conulariids of the early Palaeozoic and have been placed
-
A new fulgoroidian insect (Hemiptera: Surijokocixiidae) from the Middle Triassic Tongchuan Formation of northwestern China Palaeoworld (IF 1.7) Pub Date : 2024-02-29 Qian-Qi Zhang, Lan Li, Jacek Szwedo, Tong Bao, Hai-Chun Zhang
Zhang, Szwedo and Zhang, n. gen. n. sp., is established based on a complete tegmen from the Middle Triassic Tongchuan Formation in Shaanxi, China, and is assigned to the family Surijokocixiidae of Fulgoromorpha, Hemiptera. A key of all the known species of Surijokocixiidae is provided for the first time.
-
No place for Pliocene tourists with Ockham’s razor in the pocket: Comment on Crespo et al. (2023) Palaeoworld (IF 1.7) Pub Date : 2024-02-29 Marc Furió, Raef Minwer-Barakat, Antonio García-Alix
have recently described a new genus and species called , purportedly an afrosoricid ‘tourist genus’ coming from central Africa to Spain during the Pliocene. The occurrence of this mysterious animal has been justified by means of a migration of thousands of kilometers leaving no other fossil evidence all along such an incredible journey. According to our analyses, this ‘tourist genus’ is surrounded
-
Book review Palaeoworld (IF 1.7) Pub Date : 2024-02-01 Yasmani Ceballos Izquierdo, Johanset Orihuela
Abstract not available
-
-
Lower Cisuralian brachiopod faunas from the Lhasa and South Qiangtang blocks in Tibet and their biostratigraphical and palaeobiogeographical implications Palaeoworld (IF 1.7) Pub Date : 2024-01-08 Hai-Peng Xu, Yi-Chun Zhang, Yu-Jie Zhang, Feng Qiao, Shu-Zhong Shen
The opening time of the Bangong-Nujiang Ocean (BNO, also known as the Meso-Tethys Ocean) remains controversial. It was documented to have opened during the Permian, Early Palaeozoic or Mesozoic times. The Permian faunas and their palaeobiogeographical affinities of the Lhasa and South Qiangtang blocks bordered by the Bangong-Nujiang Suture Zone are crucial for reconstructing the tectonic evolution
-
Devonian–Carboniferous transition in various facies of Northeast Laurussia (North Urals) Palaeoworld (IF 1.7) Pub Date : 2024-01-05 Artem N. Plotitsyn, Andrey V. Zhuravlev, Dmitry B. Sobolev, Denis A. Gruzdev, Yadviga A. Vevel, Svetlana V. Nikolaeva
This study analyzed 14 stratigraphic sections exposing the Devonian–Carboniferous boundary interval in the North Urals, representing different facies from shallow-water carbonate platform to bathyal, in order to assess the possibility of recognizing regional levels corresponding to the base of the conodont zones S. sulcata and Protognathodus kockeli. The base of the S. sulcata Zone is regionally recognized
-
First report of heterobranch microgastropods from an early Eocene marginal marine succession of Cambay Basin, western India Palaeoworld (IF 1.7) Pub Date : 2023-12-28 Sayoni Banerjee, Kalyan Halder
Although gastropods are one of the most studied mollusk groups, fossil records of heterobranch microgastropods are scarce. Here, nine species of heterobranch microgastropods are described from the early Eocene Cambay Shale of the Cambay Basin, including 8 new species: Ringicula knolli n. sp., Cylichna (Cylichna) ypresiana n. sp., Aliculastrum suratensis n. sp., Odostomia concavata n. sp., Megastomia
-
Per-capita change rates of the Phanerozoic Earth-life system exhibited Zipf distributions Palaeoworld (IF 1.7) Pub Date : 2023-12-28 Haitao Shang
The Zipf distribution is widespread in physical and biological systems on the modern Earth; whether such distributions existed in the ancient Earth-life system, however, remains understudied. Here I demonstrate that per-capita change rates (PCCRs) of the atmospheric CO2 level, global average temperature, genus richness, and body size during the Phanerozoic exhibited Zipf distributions. Statistical
-
Uppermost Darriwilian radiolarians from the lower part of Wulalike Formation, Northwest Ordos Basin, North China Palaeoworld (IF 1.7) Pub Date : 2023-12-23 Xue-Jin Wu, Zheng-Liang Huang, Hui Luo, Zheng-Hong Cai, Yao-Xuan Guo, Yang Liu, Yu-Jing Wang, Jonathan C. Aitchison, Yuan-Dong Zhang
A well-preserved radiolarian assemblage is described from argillaceous limestone of the Wulalike Formation in the Northwest Ordos Basin, North China. A total of nine species of seven genera are described, including Inanigutta gansuensis, I. quadrispinosa, I. complanata, Inanibigutta pinglianensis, Oriundogutta bella, Triplococcus acanthicus, Haplentactinia juncta, Syntagentactinia pupila n. sp., and
-
Freshwater microconchids from the Tanzhuang Formation (Middle-Late Triassic) in North China Palaeoworld (IF 1.7) Pub Date : 2023-12-20 Hao Yang, Yue Su, Hui-Jun Chen, Yi-Ran Cao, Meng-Yang Zhang, Rui Li, Dao-Liang Chu
We describe aggregative microconchid tubes from Middle-Late Triassic lacustrine strata of the Tanzhuang Formation in the Jiyuan-Yima Basin, North China. These microconchid tubes are attached to plant fragments and are preserved with bivalves, ostracodes, phyllostachys, gastropods, and coleoptera fragments. The findings confirm that the extinct lophophorate group inhabited non-marine continental basins
-
Unique 3D preservation of Rhuddanian (Silurian) Callograptidae (Gorny Altai, Russia) Palaeoworld (IF 1.7) Pub Date : 2023-12-16 Nikolay V. Sennikov, Elena V. Lykova
We studied a collection of the Silurian (Rhuddanian) multi-branched dendroids, including reticulate, benthic dendroid graptolites of the Callograptidae Hopkinson (in Hopkinson and Lapworth, 1875), from the Gorny Altai, Russia. Species of Dictyonema Hall, Koremagraptus Bulman, Callograptus Hall, and Desmograptus Hopkinson were identified and described. The graptolites are represented by in situ burial
-
Mid-Carboniferous rugose corals from Xinjiang, Northwest China: Evolutionary and palaeogeographical implications Palaeoworld (IF 1.7) Pub Date : 2023-12-15 Hui Wang, Le Yao, Wei Lin, Xing Huang, Wei-Hua Liao
The mid-Carboniferous represents a key transition in the evolution of rugose corals, but the evolutionary pattern has been scarcely studied due to the lack of consecutive carbonate succession caused by Hercynian orogeny and Gondwana glaciation. In this study, seventeen rugose coral species belonging to fourteen genera are described from the late Visean to Bashkirian strata in the Suguersu section,
-
Terreneuvian skeletonized microfossils from the Central Iberian Zone (Spain) and correlation of the Fortunian Stage throughout southwestern Europe Palaeoworld (IF 1.7) Pub Date : 2023-12-13 J. Javier Álvaro, Saturnino Lorenzo, Léa Devaere, Lucas V. Warren
During the Ediacaran–Cambrian boundary interval, the Iberian margin of West Gondwana recorded oceanic upwelling and phosphogenesis favouring the preservation of originally phosphatic and diagenetically phosphatized shells. In the Abenójar Dome and the Alcudia Anticline of the Central Iberian Zone, the Fuentepizarra Formation comprises several phosphorite and phosphatic limestone interbeds that yield
-
Conodonts across the Lochkovian/Pragian boundary in central Guangxi, South China Palaeoworld (IF 1.7) Pub Date : 2023-11-10 Jian-Feng Lu
The Lochkovian and Pragian (Lower Devonian) in the South China Block are mainly represented by siliciclastic rocks that were deposited soon after the end of the Kwangsian Orogeny during the Silurian–Devonian transition. The Pragian conodonts in the South China Block have been poorly documented, and the Lochkovian/Pragian boundary, defined by the first appearance of the conodont Eognathodus irregularis
-
New data on Silurian (Llandovery) sinacanthids from Wuhan, South China and their biostratigraphic and paleobiogeographic implications Palaeoworld (IF 1.7) Pub Date : 2023-11-07 Yi-Long Liu, Jia-Yi Yin, Ruo-Ying Fan, Rui-Wen Zong, Yi-Ming Gong
Sinacanthids are a group of Silurian spine-based mysterious taxa, probably representing a lineage of stem chondrichthyans. New sinacanthid fossils attributed to Sinacanthus wuchangensis, S. triangulatus, Sinacanthus sp., Neosinacanthus planispinatus, Tarimacanthus bachuensis, Eosinacanthus shanmenensis, and fin spine morphology 1, 2 and 3 are identified from the upper part of the Qingshui Formation
-
-
Discovery of the earliest Devonian conodonts from Xinjiang, Northwest China Palaeoworld (IF 1.7) Pub Date : 2023-10-24 Jia-Yi Yin, Ladislav Slavík, Jian-Feng Lu, Juan Ma, Yi-Long Liu, Rui-Wen Zong, Yi-Ming Gong
The base of the Devonian is defined at the first appearance of graptolite Uncinatograptus uniformis uniformis, with the occurrence of trilobite Warburgella rugulosa rugosa and conodont Caudicriodus woschmidti as the auxiliary indicators. Recently some researchers questioned whether Caudicriodus woschmidti can be an indicator, and proposed Caudicriodus hesperius to mark the base of the Devonian in carbonate
-
New larval records of the extinct hard tick Compluriscutula vetulum (Arachnida: Ixodida) from Burmese amber, with notes on its morphology Palaeoworld (IF 1.7) Pub Date : 2023-10-24 Lidia Chitimia-Dobler, Timo Pfeffer, Felix Würzinger, Stephan Handschuh, Jason A. Dunlop
The hard tick (Ixodida: Ixodidae) from the mid-Cretaceous (ca. 100 Ma) Burmese amber of Myanmar was first described in a new, extinct genus based on a larva. Here, several more larvae are documented providing additional morphological data based on optical studies using a Keyence VHX-6000 Digital Microscope supplemented by computed microtomography (µ-CT). We confirm the presence of 14 festoons (not
-
Macroalgal fossil Longfengshania from the Tonian Shiwangzhuang and Jiuliqiao formations in western Shandong and northern Anhui, North China Palaeoworld (IF 1.7) Pub Date : 2023-10-13 Guang-Jin Li, Lei Chen, Ke Pang, Qing Tang, Cheng-Xi Wu, Rui Huang, Ming-Yang Qiu, Xun-Lai Yuan, Chuan-Ming Zhou
Longfengshania is among the few examples of Pre-Cryogenian macroscopic fossils with an unambiguous eukaryotic affinity. It has received great attention since this genus is the earliest known Pre-Cryogenian macroalga with blade, stipe, and holdfast differentiation. However, compared to other macrofossils, such as Chuaria and Tawuia, reported occurrences (lithostratigraphic units) of Longfengshania are
-
Comparative morphometrics for species discrimination and analysis in the tabulate coral Catenipora from Baltoscandia Palaeoworld (IF 1.7) Pub Date : 2023-09-28 Kun Liang
Transverse thin-section images of 12 species of Catenipora from the Ordovician and Silurian of Baltoscandia are analyzed in detail by a comparison of multivariate and two-dimensional geometric morphometrics. The corallites are described by 17 quantitative and qualitative morphological characters, and by 28 landmarks and centroid size. The statistical methods confirm that C. distans, C. elegans, C.
-
Revision of conodont genus Protoprioniodus and its type species from the Lower Ordovician of the Canning Basin, Western Australia Palaeoworld (IF 1.7) Pub Date : 2023-09-27 Yong Yi Zhen
Examination of the original types and abundant topotype specimens from the Emanuel Formation (Early Ordovician) and the correlative subsurface Nambeet Formation of the Canning Basin in Western Australia confirms a septimembrate species apparatus for Protoprioniodus simplicissimus, the type species of the genus. Species of Protoprioniodus are characterized by having a seximembrate or septimembrate
-
Radiolarian and planktonic foraminiferal biochronology of the Pano Panagia section, Lefkara Formation (Maastrichtian, Upper Cretaceous), Cyprus Palaeoworld (IF 1.7) Pub Date : 2023-09-27 Liubov Bragina, Nikita Bragin, Polina Proshina, Boris Pokrovsky, Efthymios Tsiolakis, Vasilis Symeou, Nikolaos Papadimitriou
Well-preserved radiolarians were studied from a section of the Lefkara Formation near Pano Panagia Village (southwestern Cyprus) which was previously dated as Upper Cretaceous (Maastrichtian). More than 60 radiolarian species were recovered in this section, including Amphipyndax tylotus Foreman, Archaeodictyomitra lamellicostata (Foreman), Lithomelissa (?) sp. aff. L. (?) hoplites Foreman, Lithomespilus
-
Sedimentary processes of the Lower Permian Dingjiazhai Formation in the Baoshan Block Palaeoworld (IF 1.7) Pub Date : 2023-09-27 Biao Gao, Ji-Tao Chen, Wen-Li Yang, Hao Xin, Xiang-Dong Wang
The Baoshan Block was part of the eastern Cimmerian continent along the northeastern margin of Gondwana during the late Paleozoic, and preserves continuous sedimentary records during the apex of the Early Permian glaciation. Although much work has been carried out on biostratigraphy and paleogeography, detailed sedimentological study of the glacial records in the Baoshan Block has gained little attention
-
Earliest styliolinids from the Wenlock of Saaremaa Island (Estonia): paleoecological and evolutionary implications Palaeoworld (IF 1.7) Pub Date : 2023-09-22 Olev Vinn, Abdullah A. Alkahtane, Magdy M. El Hedeny, Saleh Al Farraj, Ursula Toom
The new tentaculitoid Styliolina giga n. sp. is described from the Wenlock of Saaremaa Island, Estonia. It is the earliest definite styliolinid as other known species are all reported from the Devonian. The peculiarities of the accompanying fauna indicate that Styliolina giga n. sp. could have inhabited a marginal marine environment, which had restricted connections to the ocean. The occurrence of
-
New insights into the conodont biostratigraphy and paleobiogeography of the Katkoyeh Formation (Lower–Upper Ordovician) at the Katkoyeh Section, East-Central Iran Palaeoworld (IF 1.7) Pub Date : 2023-09-18 Farzad Poursalehi, Gustavo G. Voldman, Ali Bahrami, Matías J. Mango
The Katkoyeh Formation comprises most of the Ordovician strata in the Kerman Province of East-Central Iran. However, determining its depositional timing remains challenging due to conflicting biostratigraphic ages, regional stratigraphic gaps, and tectonic complexities in the area. To enhance the understanding of the Katkoyeh Formation, a new conodont sampling was conducted at the Katkoyeh type section
-
Calophyllum (Calophyllaceae) from late Oligocene–Early Miocene of Li Basin, northern Thailand and its biogeographic and paleoclimatic implications Palaeoworld (IF 1.7) Pub Date : 2023-09-14 Napussawan Thongsangtum, Jian Huang, Shu-Feng Li, Yupa Thasod, Tao Su
Fossils from tropical Asia, which are far from fully investigated, are important for understanding the evolution of plant diversity and the associated surrounding environment there. In this study, we report, as the first record in Thailand, the well-preserved leaf fossils of Calophyllum Linnaeus (Calophyllaceae) from the upper Oligocene–Lower Miocene lacustrine deposits in Li Basin, northern Thailand
-
First record of the late Famennian conodonts in Qamdo, Tibet and their biostratigraphic implications Palaeoworld (IF 1.7) Pub Date : 2023-09-10 Yu-Ze Huang, Wen Guo, Wei Lin, Ping-Cuo Zhaxi, Le Yao, Ke-Yi Hu, Qiu-Lai Wang, Yu-Ping Qi
Based on the conodonts recovered for the first time and some brachiopods, this study revises the age of the Wuqingna Formation in eastern Tibet to a late Famennian, challenging prior Carboniferous classification based on coral assemblages. In this study, conodonts are described for the first time from the Wuqingna Formation on the Wuqingka Mountain near Toba Town, Qamdo City in eastern Tibet. The conodont
-
Kungurian (Cisuralian) conifers and environmental changes: a negative δ13C shift in the flora of Tregiovo (Northern Italy) Palaeoworld (IF 1.7) Pub Date : 2023-09-01 Giuseppa Forte, Nereo Preto, Evelyn Kustatscher, Cindy V. Looy
The Le Fraine fossil locality, near the Tregiovo village (Trento Province, northern Italy) yields two of the best documented Kungurian (early Permian) plant fossil assemblages of eastern palaeoequatorial Pangea. Both plant assemblages (Tregiovo A and B) are dominated by walchian and voltzian conifers but differ in the relative abundance of the major plant groups. Analyses of the δ13C of the bulk organic
-
First complete Niobe yangtzeensis Lu, 1975 (Asaphidae, Trilobita) from the Middle Ordovician of South China, and its systematic and palaeogeographic implications Palaeoworld (IF 1.7) Pub Date : 2023-08-28 Xiao-Qi Du, Yi-Long Liu, Rui-Wen Zong
Since Niobe yangtzeensis was erected in 1975, due to no complete or even cephalic specimens, the generic assignment of Niobe yangtzeensis remains controversial. Based on the new discovery of a complete specimen of Niobe yangtzeensis in Yichang of South China, this species is redescribed and its generic position assignment is clarified and confirmed. A phylogenetic analysis of Niobinae shows that each
-
First record of plant-plant facilitative interaction from the Moscovian (Pennsylvanian, upper Carboniferous) of North China Palaeoworld (IF 1.7) Pub Date : 2023-08-26 Ke-Yu Wang, Xing Huang, Wan Yang, Jun Wang, Ming-Li Wan
Fallen logs acting as a seedbed for trees to aid the regeneration of vegetation is a common ecological strategy in modern forests. However, the origin, occurrence, and evolution of this nurse log strategy in the geological time is unclear. Here we report a ca. 310-million-year-old permineralized cordaitalean tree trunk from the Moscovian (Pennsylvanian, upper Carboniferous) Benxi Formation in Yangquan
-
Middle Triassic (Muschelkalk) transgression in the West Tethys: biostratigraphic evidence from Sardinia (Italy) Palaeoworld (IF 1.7) Pub Date : 2023-08-22 Lorenzo Stori, Ausonio Ronchi, José López-Gómez, Ana Márquez-Aliaga, Sonia Ros-Franch, Antonio Goy, Leopoldo Márquez, Anna Gandin, Javier Martín-Chivelet
Stratigraphic and palaeontological analyses of the Middle Triassic (latest Anisian–Ladinian) in Muschelkalk facies are performed here to further unravel the palaeogeographic evolution of Sardinia in this time-frame. These shallow marine successions reveal a significant palaeontological record comprising facies and marker fossils (ammonoids, bivalves, conodonts, foraminifera etc.) reflecting a regional
-
Lower Jurassic trace fossil Zoophycos from the Ksour Mountains of northwestern Algeria and their palaeoecological and palaeoenvironmental significance Palaeoworld (IF 1.7) Pub Date : 2023-08-03 Imad Bouchemla, Madani Benyoucef, Li-Jun Zhang, Mariusz A. Salamon, Hendrik Klein, Fayçal Mekki
The Zoophycos ichnofacies is reported for the first time from the Lower Jurassic (Toarcian) deposits of Algeria. The trace fossil-bearing strata in the Ksour Mountains, northwestern Algeria, are an alternation of fine-grained limestones and marls. The assemblage is characterised by its low diversity, consisting of eight ichnospecies (Chondrites intricatus, C. targionii, Chondrites isp., Palaeophycus
-
Stigmaria: on the substrate before in the substrate Palaeoworld (IF 1.7) Pub Date : 2023-07-26 Michael P. D'Antonio, Catriona M. Breasley, Hermann W. Pfefferkorn, Jun Wang, C. Kevin Boyce
Stigmaria is the rooting organ of late Paleozoic arborescent lycopsids. Previous scientific considerations of the stigmarian habit have placed the entire rooting organ shallow beneath the substrate surface, despite the proximal main stigmarian axes radiating outwards orthogonally from the trunk in all known stump casts with attached Stigmaria. Here, we show definitively that stigmarian axes were subaerial
-
Potential pollinators and paleoecological aspects of Eocene Ludwigia (Onagraceae) from Eckfeld, Germany Palaeoworld (IF 1.7) Pub Date : 2023-07-20
Paleogene flower-insect interactions and paleo-pollination processes are, in general, poorly understood and fossil evidence for such floral and faunal interactions are rarely reported. To shed light on angiosperm flower-insect interactions, we investigated several hundred fossil flowers and insects from the middle Eocene Fossil Lagerstätte of Eckfeld, Germany. During our work, we discovered a unique
-
The sedimentary facies and tectono-stratigraphic successions of the Carboniferous–Lower Permian deposits in western South Qiangtang Block: Implication for a rifting process on the Gondwana margin Palaeoworld (IF 1.7) Pub Date : 2023-07-17
The South Qiangtang Block (SQB) was widely acknowledged as a part of the Cimmerian Continent, which rifted away from Gondwanan margin during the Early Permian. However, the sedimentary response to this rifting event has thus far not been unequivocally confirmed, which makes this event ambiguous. In this contribution, three stratigraphic successions are recognised, which are characterised by distinct
-
Preface: The mid-Miocene Zhangpu Biota Palaeoworld (IF 1.7) Pub Date : 2023-07-17 Bo Wang, Gong-Le Shi
Abstract not available
-
-
The age and depositional environments of the lower Karoo Moatize Coalfield of Mozambique: insights into the postglacial history of central Gondwana Palaeoworld (IF 1.7) Pub Date : 2023-07-12
The Moatize Coalfield belongs to a network of continental Karoo basins of central Mozambique, known as the Zambezi Basin. Palynological and sedimentological studies were performed on four coal exploration boreholes to determine the age, depositional settings, and overall geological evolution of its extensive coal deposits. Clastic formations recognised in this coalfield, in ascending order, are the
-
CAI and microtextures of low-grade metamorphosed conodonts related to lithological and geological controls Palaeoworld (IF 1.7) Pub Date : 2023-07-06 R. Aaron Lara-Peña, Silvia Blanco-Ferrera, Miguel A. Torres-Martínez, Pilar Navas-Parejo
Textures, microtextures, and CAI of early Permian conodonts recovered from three sections of the La Cueva Limestone and the Mina México Formation from Sonora, northwestern Mexico, are herein reported. Nearly uniform values of CAI 5 (a few at CAI 5.5) indicate low-grade metamorphic conditions in the study area. Metamorphic effects in conodonts are demonstrated by the development of the granular microtexture
-
New fishes from the Viséan–Serpukhovian boundary beds (Carboniferous) of the Verkhnyaya Kardailovka section (South Urals, Russia) Palaeoworld (IF 1.7) Pub Date : 2023-07-04 Alexander O. Ivanov, Alexander S. Alekseev, Svetlana V. Nikolaeva
A diverse fish assemblage is described from the uppermost Viséan (Mississippian, Carboniferous) of the Verkhnyaya Kardailovka section, South Urals, Russia. The uppermost Viséan (Mississippian, Carboniferous) of the Verkhnyaya Kardailovka section in the South Urals, Russia, has revealed a diverse fish assemblage. This section is particularly notable for housing the first occurrence of the conodont L
-
On Procobus Khomenko, 1913 (Mammalia: Artiodactyla: Bovidae), with new evidence from the Late Miocene of Greece Palaeoworld (IF 1.7) Pub Date : 2023-07-03 Dimitris S. Kostopoulos, Gildas Merceron
Procobus is a rare and controversial Late Miocene bovid genus (Artiodactyla, Bovidae), originally known by a few cranial remains from the northern shores of the Black Sea. New material from Dytiko-1 fossil site in Axios Valley, northern Greece expands its geographic and chronological distribution and provides additional craniodental characters for its definition. A thorough description and comparison
-
Middle to Upper Ordovician stable carbon isotope stratigraphy and sedimentary facies in the Shunbei and Tahe areas, northern-central Tarim, China Palaeoworld (IF 1.7) Pub Date : 2023-07-01 Dong-Chen Ma, Wen-Jie Li, Zhong-Yang Chen, Xiang Fang, Jun-Feng Cheng, Xing-Liang Jia
The Shunbei area, located in northern-central Tarim (Northwest China), represents a new, important area for petroleum and gas exploration. This study presents high-resolution, conodont biostratigraphically controlled stable carbon isotope data from 540 samples of four deeply buried (∼7000–8000 m) wells in the Shunbei area and its nearby Tahe area spanning the Middle to Upper Ordovician for detailed
-
A new foraminiferal fauna from the Tangra Yumco area, central Lhasa Block, Tibet and its palaeobiogeographic implications Palaeoworld (IF 1.7) Pub Date : 2023-06-29 Qi Ju, Yi-Chun Zhang, Hai-Peng Xu, Hua Zhang, Quan-Feng Zheng, Mao Luo, Wen-Kun Qie, Jun-Jie Liu, Shu-Zhong Shen
A foraminiferal fauna, consisting of 8 species of fusulines and 24 species of smaller foraminifers, is reported from the middle part of the Xiala Formation in the Tangra Yumco section in central Lhasa Block. The dominance of fusuline Nankinella-Chusenella assemblage and smaller foraminifera Hemigordiopsis indicates a Capitanian (late Guadalupian) age. Quantitative methods including Cluster analysis
-
X-ray micro-computed tomography of minute hooded beetles (Coleoptera: Corylophidae) reveals its hidden paleodiversity in the Eocene Baltic amber Palaeoworld (IF 1.7) Pub Date : 2023-06-30 Karol Szawaryn, Vitalii Alekseev, Andris Bukejs
Fossil Corylophidae are poorly known. Three fossil representatives of the family were described until now: one from mid-Cretaceous (Mesozoic) and two from Eocene (Cenozoic) deposits. We revise corylophid material from Baltic amber using X-ray micro-computed tomography (μCT) and describe two new species: Clypastraea venedorum n. sp. and C. groehni n. sp. The systematic placement of the previously described
-
New material of heteromorph ammonites from the Lower Cretaceous of Lhozhag County, southern Tibet and its biostratigraphic implications Palaeoworld (IF 1.7) Pub Date : 2023-06-30 Cheng Ji, Wangjiu Mima, Danzeng Awang, Bo Xu
Cretaceous ammonites are still poorly known in Tibet, western China. Here we describe a new heteromorph ammonite fauna from the Lower Member of the Lakang Formation in the Lhozhag County, southern Tibet. Material of at least five genera are recognized, including Aspinoceras, ? Hemihoplites, Heteroceratidae gen. et sp. indet, ? Mortoniceras and Parancyloceras, among which three genera are reported from
-
Fryxellodontus inornatus (Conodonta) and associated conodonts from the Furongian (upper Cambrian) of the Cordillera Oriental, Argentina Palaeoworld (IF 1.7) Pub Date : 2023-06-22 E. Kristal Rueda, Guillermo L. Albanesi
The conodont biostratigraphy of the middle-upper Lampazar Formation exposed at El Angosto del Moreno area, Cordillera Oriental of Jujuy, Argentina is analyzed. This 150 m thick unit overlies the Padrioc Formation (late Cambrian) and underlies the Cardonal Formation (late Cambrian–early Tremadocian). The unit is composed of pelites interbedded with sandstones and calcarenites and occasional coquinas
-
Late Middle Jurassic aridification event in the Qaidam Basin, Northwest China: palynological and geochemical evidences Palaeoworld (IF 1.7) Pub Date : 2023-06-17 Wen-Quan Xie, Wen-Hui Wang, Jing-Qiang Tan, Zhao-Jun Liu, Yong Wang, Xue-Qi Song, Ahmed Mansour
Jurassic is characterized by a highly fluctuating climate. During the late Middle to Late Jurassic, Northwest China, including the Qaidam Basin, underwent a major climate transition from humid to arid conditions. In this study, we focused on the climate transitional interval (Bathonian Stage, Jurassic) and conducted high-resolution palynological and geochemical analysis to constrain more accurately
-
A new palaeobiological assemblage from the Son Valley Bhander Group and its implications on the age of the upper Vindhyans of India Palaeoworld (IF 1.7) Pub Date : 2023-06-08 Santosh K. Pandey, Deepak Singh, Mukund Sharma, Shamim Ahmad, Uday Bhan
The present study discusses the biostratigraphically significant new fossil assemblage recovered from the three stratigraphic units of the Bhander Group of the Vindhyan Supergroup, exposed in the Son Valley, India. The assemblage comprises vase-shaped like microfossils (possible VSMs) — Cycliocyrillium simplex, C. torquata, Bonniea pytinaia, B. dacruchares, scale microfossils, and cyanobacterial forms
-
A new species of Eirictis (Mammalia, Carnivora, Mustelidae) from Lower Pleistocene of Yuanmou Basin, Yunnan, China Palaeoworld (IF 1.7) Pub Date : 2023-06-07 Arya Farjand, Li-Ya Fu, Qi-Gao Jiangzuo, Zhi-Heng Liu, Jian Wang, Xin-Yi ng Zhou, Shun-Dong Bi, Li-Hua Wang
The Yuanmou Formation has long been appreciated for producing abundant Pleistocene fossil mammals in South China, especially several families of large carnivores. The discovery of a new locality in the South of Yuanmou County recently provided substantial evidence of new Pleistocene predators. Among them, a small mandible and the associated P4 and M1 of a Lyncodontini mustelid were found in Member
-
First complete specimens of Karslanus (Trilobita, Dameselloidea) from Longha Formation (Cambrian: Guzhangian), Yunnan, South China Palaeoworld (IF 1.7) Pub Date : 2023-05-26 Shan-Chi Peng, Loren E. Babcock, Xian-Feng Yang, Xue-Jian Zhu
The trilobite Karslanus Özdikmen, 2009 (replacement name for Ariaspis Wolfart, 1974, preoccupied) is a presumed dameselloid genus reported from Afghanistan and South China. Until now, it has been known only from fragmentary material. A new species, Karslanus leishuae, from the Fulu Biota in the Longha Formation (Cambrian: Guzhangian) of Yunnan, South China, is represented by complete exoskeletons,
-
Unraveling the Early Devonian provenance of the Longmenshan region through detrital zircon records: Implications for floral differentiation in South China Palaeoworld (IF 1.7) Pub Date : 2023-05-24 Yan-Xiong Zhang, Bo Zheng, Xiao-Le Zhang, Pu Huang
The Longmenshan region is the geographical boundary between the Sichuan Basin and the eastern Tibetan Plateau, but whether it is the tectonic boundary between the Yangtze Block and Songpan-Garze terrane is still controversial. Meanwhile, the Early Devonian floral differentiation between the Longmenshan region and the southern part of the Yangtze Block, such as Yunnan and Guizhou provinces, also leads
-
The first fossil Scarites (Coleoptera: Carabidae) from the Duho Formation (middle Miocene), Korean Peninsula Palaeoworld (IF 1.7) Pub Date : 2023-05-23 Soo Bin Lee, André Nel, Gi Soo Nam
We report Scarites sp. as the first fossil Coleoptera from Duho Formation in Korean Peninsula. It is characterized by rounded margins of pronotum, straight posterior part of compound eyes, overall oval shape from apex of head to thorax, lateral margins of elytra slightly rounded, and thick antenna cleaner on protibia. Until now, most terrestrial fossils with description from Duho Formation are plant
-
Osteomyelitis in the manus of Smilodon populator (Felidae, Machairodontinae) from the Late Pleistocene of South America Palaeoworld (IF 1.7) Pub Date : 2023-05-22 Carlos A. Luna, Roy R. Pool, Marcos D. Ercoli, Nicolás R. Chimento, Fernando H. Barbosa, Alfredo E. Zurita, Pedro Cuaranta
The knowledge of the paleopathologies that affected large mammals during the Pleistocene of South America has increased in the last years, but most of the reported cases belong to the endemic clade Xenarthra. On the contrary, almost no case of diseases is known among representatives of other clades such as Carnivora. Here we present and describe an inflammatory lesion in a left metacarpal IV assigned
-
-
Vegetation dynamics in the Early–Middle Pennsylvanian coal swamps of the Nord-Pas-de-Calais Coalfield, France Palaeoworld (IF 1.7) Pub Date : 2023-05-03 Azucena Molina-Solís, Christopher J. Cleal, Eliott Capel, Borja Cascales-Miñana
During recent years, different studies have focused on characterizing plant diversities in the Carboniferous environments of the Variscan Foreland. One of these areas, the Nord-Pas-de-Calais Coalfield, has a Namurian–Westphalian sequence that has historically yielded abundant evidence of vegetation change, but to date, little attention has been paid to its macrofloral diversity dynamics. Here we show
-
Pastillus aethiopicus n. sp. (Coleoptera: Cybocephalidae), a new fossil beetle from Miocene Ethiopian amber and a taxonomic key to the species of Pastillus Endrödy-Younga Palaeoworld (IF 1.7) Pub Date : 2023-04-26 Trevor Randall Smith, Karol Szawaryn
We describe a new species of Cybocephalidae (Coleoptera) from Ethiopian Miocene amber, Pastillus aethiopicus n. sp. This is the second beetle species discovered in that fossiliferous amber deposit. It is the fourth species described in the extant genus Pastillus Endrödy-Younga and the first fossil species discovered. Pastillus is reviewed, the species diagnosed, listed, keyed, and distribution data
-
Biostratigraphy of Bajocian–Oxfordian strata based on dinoflagellate cysts and ammonites from the Dalichai Formation, northeastern Iran Palaeoworld (IF 1.7) Pub Date : 2023-04-25 Ebrahim Ghasemi-Nejad, Parvin Esmaili, Mahmoud Reza Majidifard, Mohammad Sharifi
The Bajocian–Oxfordian Dalichai Formation of the Binalud Mountains (northeastern Iran) consists of marls, marly limestones and limestones that were sampled and studied in detail for their palynomorph and ammonite contents. Palynological studies enabled differentiation of three marine biozones (Cribroperidinium crispum, Dichadogonyaulax sellwoodii, and Ctenidodinium continuum) within the lower interval