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An exceptionally preserved conulariid from Ordovician erratics of Northern European Lowlands PalZ (IF 1.42) Pub Date : 2021-01-16 Consuelo Sendino, Martin M. Bochmann
A conulariid preserved in three dimensions from Ordovician fluvioglacial erratics of the Northern European Lowlands (North German Plain) is described under open nomenclature. It is assigned to the genus Conularia with similarities to Baltoscandian conulariids. The lithology of the erratic boulder and fauna contained in it provide important information on the origin and transport direction of the sediment
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First report of the megathyridid (Terebratellidina) brachiopod Argyrotheca from a hydrocarbon seep deposit, middle Eocene Humptulips Formation, Washington State, USA PalZ (IF 1.42) Pub Date : 2021-01-10 James L. Goedert, Michael R. Sandy, Jörn Peckmann
A single terebratulide brachiopod valve found in a middle Eocene limestone deposit in the Humptulips Formation in western Washington State is the first record of a megathyridid brachiopod in a hydrocarbon seep deposit, the first fossil record of the genus Argyrotheca in western North America, and the northernmost record for Argyrotheca from the north-eastern Pacific Ocean.
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Middle Jurassic (Upper Bathonian and Lower Callovian) jaws of Kosmoceratid ammonites of Central Russia PalZ (IF 1.42) Pub Date : 2021-01-08 Vasily V. Mitta, Aleksandr A. Mironenko
Elements of the jaw apparatuses of the ammonite genus Kepplerites (Ammonoidea: Stephanoceratoidea, Kosmoceratidae, Keppleritinae) are described from two Upper Bathonian and one Lower Callovian localities of the Russian Platform. The lower jaws (aptychi), based on their size and shape can be assigned to two groups and certainly belonged to the co-occurring macroconchs K. (Kepplerites) and theirs microconchs
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Sedimentary factories and ecosystem change across the Permian–Triassic Critical Interval (P–TrCI): insights from the Xiakou area (South China) PalZ (IF 1.42) Pub Date : 2020-11-05 Yu Pei, Jan-Peter Duda, Joachim Reitner
The Permian–Triassic mass extinction included a potentially catastrophic decline of biodiversity, but ecosystem change across this event remains poorly characterized. Here we reconstruct sedimentary factories and ecosystem change across the Permian–Triassic Critical Interval (P–TrCI) in the Xiakou area (South China). Six microfacies (MF) were classified. The succession begins with a eukaryote-controlled
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Triskelia scotlandica , an enigmatic Rhynie chert microfossil revisited PalZ (IF 1.42) Pub Date : 2020-11-05 Michael Krings
The enigmatic microfossil Triskelia scotlandica from the Lower Devonian Rhynie chert is an acritarch-like, usually spheroidal to ovoid vesicle with a surface ornamentation comprised of isolated triradiate and meandering, high membranous ridges. The form has been formally described based on dispersed specimens preserved inside the remains of a land plant axis, and interpreted as the resting stage of
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Re-evaluation of the taxonomic and systematic status of “ Halitherium ” antillense Matthew, 1916 (Mammalia, Sirenia) PalZ (IF 1.42) Pub Date : 2020-10-27 Manja Voss
Halitherium antillense Matthew, 1916 was established on a left mandibular fragment and two vertebrae from late Oligocene deposits of Puerto Rico. This species was only provisionally referred to the genus Halitherium and its taxonomic status and systematic affinities remained doubtful. In the course of the revision of the Halitherium-species complex and the meanwhile invalid generic name “Halitherium”
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An unusual historic dicynodont specimen (Therapsida: Dicynodontia) from the Dinodontosaurus Assemblage Zone of the Santa Maria Formation (Middle Triassic) of Rio Grande do Sul, Brazil PalZ (IF 1.42) Pub Date : 2020-10-01 Michael W. Maisch
An unusual dicynodont specimen from the historical collection of von Huene and Stahlecker (1928/1929) is described from the Middle Triassic Dinodontosaurus Assemblage Zone of the Santa Maria Formation of Chiniquá, Rio Grande do Sul, Brazil. Hitherto only two dicynodont species, the stahleckeriid Stahleckeria potens and the more basal kannemeyeriiform Dinodontosaurus turpior, were recorded from this
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Mio–Pleistocene Ostracoda from the Zhada Basin (western Tibetan Plateau) PalZ (IF 1.42) Pub Date : 2020-09-25 Mauro Alivernini, Junbo Wang, Peter Frenzel, Steffen Mischke
We present a list of Ostracoda (Crustacea) from stratigraphic sections of Mio–Pleistocene lacustrine deposits from Zhada Basin, western Tibetan Plateau. In this area, almost no taxonomical studies were carried out so far, and, aiming to a future use of ostracods as palaeoenvironmental proxy for this sector of the Tibetan Plateau, a documentation of several species was performed. The taxa Leucocytherella
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A new sea scorpion (Arthropoda, Eurypterida) from the Early Devonian of Willwerath (Rhineland-Palatinate, SW Germany) PalZ (IF 1.42) Pub Date : 2020-09-03 Markus J. Poschmann
A new eurypterid specimen from the Early Devonian of Willwerath is described. The character combination seen in this fossil suggests that it is probably an adelophthalmoid eurypterid morphologically not unlike the co-occurring Parahughmilleria. However, it differs in many respects and a new genus and species, Pruemopterus salgadoi gen. et sp. nov., is proposed to accommodate this fossil. This finding
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A new large edrioasteroid from the Seifen Formation of the Westerwald, Rhenish Massif (Lower Devonian, Germany) PalZ (IF 1.42) Pub Date : 2020-09-02 Peter Müller, Gerhard Hahn
A large new edrioasteroid genus from the Seifen Formation (Lower Devonian, Germany), Seifenia gen. nov., is introduced. The type species, S. ostara sp. nov., is described and figured, and its systematic position is discussed. Seifenia shows a highly derived evolutionary position in comparison with other Lower Devonian genera. With a diameter up to 57 mm, it is the largest known domal genus of the Agelacrinitidae
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Trialarva coburgensis gen. et sp. nov., a remarkable fossil holometabolan larva (Insecta: Coleoptera) from the Triassic of Germany PalZ (IF 1.42) Pub Date : 2020-08-08 Alexander A. Prokin, Alexey S. Bashkuev
The remarkable holometabolan larva, Trialarva coburgensis gen. et sp. nov., is described from the Upper Triassic Hassberge Formation in Lower Franconia, southern Germany. It is the second described fossil larva of so-called “Sialidae-type” after the Middle Permian Kargalarva permosialis Prokin et al., to which it is morphologically close. The overall morphology of the new larva is best compatible with
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The paradoxical ichnotaxonomy of Thalassinoides paradoxicus : a name of different meanings PalZ (IF 1.42) Pub Date : 2020-06-03 Dirk Knaust
Thalassinoides paradoxicus (Woodward, 1830) is a prevalent and frequently reported ichnotaxon, but given its early erection and subsequent revisions, it now is poorly understood and lumps together three different kinds of trace fossils having distinct characteristics. A clear definition (i.e., diagnosis) of each individual component is crucial for ichnotaxonomic stability and the application of these
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Sharks, rays and skates (Chondrichthyes, Elasmobranchii) from the Upper Marine Molasse (middle Burdigalian, early Miocene) of the Simssee area (Bavaria, Germany), with comments on palaeogeographic and ecological patterns PalZ (IF 1.42) Pub Date : 2020-06-02 Jaime A. Villafaña, Giuseppe Marramà, Stefanie Klug, Jürgen Pollerspöck, Markus Balsberger, Marcelo Rivadeneira, Jürgen Kriwet
Elasmobranch remains are quite common in Miocene deposits and were the subject of numerous studies since the middle of the nineteenth century. Nevertheless, the taxonomic diversity of the Marine Molasse sharks, rays and skates is still largely unknown. Here, we describe 37 taxa from the lower Miocene of the Molasse Basin: 21 taxa could be identified at species level, whereas 15 taxa could only be assigned
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Pearl formation in an Early Cretaceous belemnite PalZ (IF 1.42) Pub Date : 2020-05-25 Kevin Stevens; René Hoffmann; Marie-Claire Picollier; Jörg Mutterlose
Many aspects of the paleobiology and biomineralization of belemnites, the most common fossil coleoid cephalopods of the Mesozoic, are still unclear. Here, we describe a pearl from an Early Cretaceous belemnite rostrum (Duvalia emerici) using high-resolution micro-CT imaging. After initial formation of a free pearl within the soft tissue, the pearl was fused to the rostrum and later overgrown by rostrum
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New Pennsylvanian Bivalvia (Mollusca), the Early Permian glaciation and the Carboniferous–Permian boundary in western Argentina PalZ (IF 1.42) Pub Date : 2020-05-07 Pamela Díaz Saravia, Carlos R. González
This paper deals with new finds from the Upper Paleozoic Santa Elena Formation that crops out to the east of Uspallata, western Argentina. Current studies reveal the existence in these rocks of a faunal assemblage characterized by the bivalve Myonia aparicioi sp. nov, fossil guide of a new biozone. This fauna is regarded as the youngest of the Pennsylvanian, age confirmed by its relationships with
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Re-description of the Spence Shale palaeoscolecids in light of new morphological features with comments on palaeoscolecid taxonomy and taphonomy PalZ (IF 1.42) Pub Date : 2020-02-26 Anna F. Whitaker, Paul G. Jamison, James D. Schiffbauer, Julien Kimmig
The middle Cambrian (Miaolingian Series; Wuliuan Stage) Spence Shale of Utah and Idaho preserves a diverse assemblage of biomineralized and soft-bodied taxa. Among the rarest specimens of this fauna are palaeoscolecid worms. Until recently, only one specimen was known from the Spence Shale, the holotype specimen of Palaeoscolex ratcliffei Robison, 1969, later included in the genus Wronascolex. This
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Unexpectedly curved spines in a Cambrian trilobite: considerations on the spinosity in Kingaspidoides spinirecurvatus sp. nov. from the Anti-Atlas, Morocco, and related Cambrian ellipsocephaloids PalZ (IF 1.42) Pub Date : 2020-02-25 Gerd Geyer, Miguel Caldeira Pais, Thomas Wotte
The new ellipsocephaloid trilobite species Kingaspidoides spinirecurvatus has a spectacular morphology because of a unique set of two long and anteriorly recurved spines on the occipital ring and the axial ring of thoracic segment 8. Together with the long genal spines this whimsical dorsally directed spine arrangement is thought to act as a non-standard protective device against predators. This is
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Taxonomy, diet and geographical provenance of fossil species of Sigmodon from west central Mexico during the late Pleistocene PalZ (IF 1.42) Pub Date : 2020-02-25 Raymundo Cervantes-Barriga, Alejandro Hiram Marín-Leyva, María Luisa García-Zepeda, Javier Ponce-Saavedra, Joaquín Arroyo-Cabrales, Peter Schaaf, Gabriela Solís-Pichardo, Tiberio Monterrubio-Rico, Horacio Cano-Camacho
The information of diet, habitat and geographic location of animals obtained from fossil deposits is important to understand the environmental changes of a place that occurred through time. Most of the paleoecological research in Mexico is centered on large mammal taxa. A minimal research effort is allocated to small vertebrates which due to their relative brief longevity and small territories, provide
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A Pliocene rhinocerotid (Mammalia, Perissodactyla) from Ajimu, Oita Prefecture, southwestern Japan, with comments on the Japanese Pliocene rhinocerotid fossil records PalZ (IF 1.42) Pub Date : 2020-02-25 Naoto Handa, Takafumi Kato
A few lower cheek teeth of rhinocerotid, probably belonging to the same individual, from the upper Pliocene Tsubusagawa Formation in Ajimu, Oita Prefecture, southwestern Japan, are described. Morphologically, the Ajimu specimen is obviously distinguished from the subtribe Teleoceratina (Brachypotherium), Elasmotheriina (Elasmotherium) and a species of subtribe Rhinocerotina, Coelodonta, but it is similar
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Lower Tithonian and lower Berriasian brachiopods from the Márévár Limestone Formation, Zengővárkony (Mecsek Mountains Hungary), and remarks on their palaeoenvironment PalZ (IF 1.42) Pub Date : 2020-02-25 László Bujtor, Richárd Albrecht, Dávid Maróti, Ákos Miklósy
A new collection provided some brachiopods assigned to Lacunosella hoheneggeri, Pygope diphya and P. janitor from the lower Tithonian (Micracanthoceras ponti Zone) and lower Berriasian (Calpionella Zone), and from the limestone succession at Zengővárkony, Mecsek Mountains, Hungary. This is the first taxonomic description and photographic documentation of these fossils. We provide reliable documentation
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Terrestrial palaeofloral succession across the Permian–Triassic Boundary in the North and South China blocks: a brief review PalZ (IF 1.42) Pub Date : 2020-02-24 Jean Broutin, Jianxin Yu, Xiao Shi, Wenchao Shu, Xue Qing
This paper critically reviews the Lopingian (Late Permian) to Early Triassic palaeofloral successions on both the South and North China blocks. From the Late Cisuralian (Early Permian) to the middle of the Lopingian, North and South China, both located in the equatorial domain, sheltered a homogeneous ‘Cathaysian Palaeoflora’ resulting from a Cisuralian southern extension and diversification from the
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Early Maastrichtian cheilostome bryozoans from the middle Volga River region PalZ (IF 1.42) Pub Date : 2020-01-29 Anna V. Koromyslova, Vladimir B. Seltser
Eight species in six genera of cheilostome bryozoans are described from an early Maastrichtian outcrop located in the Saratov Region, middle Volga River region, southern Russia. The studied bryozoan assemblage includes a new species, Cheethamia volgaensis sp. nov., as well as Dionella sp., Cheethamia aktolagayensis Koromyslova et al., Rhagasostoma cf. saltans (Brydone), and Luganella goldfussi (von
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Further evidence for fungivory in the Lower Devonian (Lochkovian) of the Welsh Borderland, UK PalZ (IF 1.42) Pub Date : 2020-01-29 Dianne Edwards, Lindsey Axe, Jennifer L. Morris, Lynne Boddy, Paul Selden
The recent demonstrations that widespread mid-Palaeozoic Prototaxites and other nematophytes had fungal affinities indicate that terrestrial fungi were important elements in carbon cycling in the Early Devonian. Here, we provide evidence for their participation in the recycling of nutrients by early terrestrial invertebrates. Evidence is in the form of coprolites, both those associated with nematophytes
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First fossil record of a jumping plant-louse (Insecta, Hemiptera, Psylloidea) from Japan PalZ (IF 1.42) Pub Date : 2020-01-29 Aika Horiguchi; Hiroaki Aiba; Yui Takahashi; Hiromitsu Inoue; Tamaki Sato
A fossil specimen of the jumping plant-louse genus Cacopsylla (Insecta, Hemiptera, Psylloidea) is described from lacustrine sediments of the middle Pleistocene Miyajima Formation of the Shiobara Group in Tochigi Prefecture, central Japan. It is the first report of a psylloid fossil from Japan. The specimen is a compression fossil of almost whole insect body, and the superb preservation of forewings
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Rhizocorallites Müller, 1955 from the Triassic and Jurassic of Germany: burrow, coprolite, or cololite? PalZ (IF 1.42) Pub Date : 2019-12-16 Dirk Knaust
Rhizocorallites articularis Müller, 1955 are string-shaped sediment aggregates with a homogeneous fill and transverse segmentation, known from marginal-marine deposits of the Middle Triassic (Anisian) of the Germanic Basin. They preferably occur as winding and bent strings at the base of thin storm layers (tempestites). Originally interpreted as the dwellings of a tubiculous annelid or a backfilled
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Carboniferous bryozoans from the Kalmard area, central Iran PalZ (IF 1.42) Pub Date : 2019-12-16 Andrej Ernst; Mohammad N. Gorgij
Four bryozoan species are described from the Siliciclastic Imagh Formation of the Carboniferous (Pennsylvanian) succession at the Imagh section, Posht-e-Badam Block, Kalmard area in central Iran. Three species are new: two trepostomes Dyscritella multiporata sp. nov., Dyscritella kalmardensis sp. nov., and a rhabdomesine cryptostome Rhombopora aryani sp. nov. The species Nikiforovella ambigua Xia and
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First lingulate brachiopods from the Ordovician volcano-sedimentary rocks of the Famatina Range, western Argentina PalZ (IF 1.42) Pub Date : 2019-12-12 Fernando J. Lavié; Juan L. Benedetto
Lingulids and siphonotretids (Lingulata) are described from the Ordovician (Floian–Dapingian) Suri Formation of the Famatina Basin in western Argentina. This is the first record of lingulate brachiopods from the arc-related volcano-sedimentary rocks of the Famatina Range. The fauna includes the new obolids Famatinobolus cancellatum gen. et sp. nov. and Lithobolus limbatum sp. nov., and the new siphonotretid
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First Triassic tetrapod (Eusauropterygia) in the Triassic of the Subbetic domain of the Betic Cordillera (Southeastern Spain) PalZ (IF 1.42) Pub Date : 2019-12-12 Juan Alberto Pérez-Valera; Mélani Berrocal-Casero; Fernando Pérez-Valera
Sauropterygian vertebrate remains from the Ladinian (Middle Triassic) of the proximity of Calasparra (Murcia, Spain) are described here. They represent the first documented Triassic vertebrate remains found in the Province of Murcia, and the first in the Subbetic domain of the Betic Cordillera (Southeastern Spain). These new remains consist of incomplete vertebrae, some fragmented neural spine apophyses
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Sea lilies of the genera Holocrinus , Tollmannicrinus, and Eckicrinus (order Holocrinida) from the Anisian (Middle Triassic) of Qingyan, south-western China PalZ (IF 1.42) Pub Date : 2019-12-12 Frank Stiller
Disarticulated stem remains of the crinoid genera Holocrinus, Tollmannicrinus, and Eckicrinus of the order Holocrinida from Anisian (early Middle Triassic) strata of the eastern and north-eastern outskirts of Qingyan, Guizhou Province, south-western China, are described. Holocrinus qingyanensis sp. nov. (family Holocrinidae) occurs in early early to middle middle Anisian deposits. Tollmannicrinus leidapoensis
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The polyphasic ontogeny of the discoidal Late Devonian ammonoid Acrimeroceras PalZ (IF 1.42) Pub Date : 2019-12-12 Stella Zora Buchwald; Christian Klug; Dieter Korn
The Late Devonian ammonoid species Acrimeroceras falcisulcatum and A. stella have similar-shaped discoidal adult conchs. Their conch morphology and its ontogenetic development are described and analysed. Despite great similarities in their adult conch morphology, they can be clearly distinguished by differences in the shape of their juvenile whorl profile and by the growth trajectories of their cardinal
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A new representative of a stylonuroid eurypterid from the Upper Devonian of the Kursk region, Russia PalZ (IF 1.42) Pub Date : 2019-12-12 Serge V. Naugolnykh; Alexander V. Areshin
The paper deals with the description of a new species Soligorskopterus shpinevi, which was found in Upper Devonian deposits cropped out in the Mikhailovsky quarry (the City of Zheleznogorsk, Kursk region, Russia). The new species is based on the single although practically complete specimen visible from its abdominal side. The new species is characterized by following features: (1) widest part of the
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Giant salamander from the Miocene of the Mecsek mountains (Pécs-Danitzpuszta, southwestern Hungary) PalZ (IF 1.42) Pub Date : 2019-12-12 Zoltán Szentesi; Krisztina Sebe; Márton Szabó
The Late Miocene fossil locality Pécs-Danitzpuszta (Mecsek Mts., Hungary) has yielded cranial and postcranial bones of giant salamanders. Based on taxonomical studies, these relatively well-preserved, isolated bones belong to the cryptobranchid species Andrias scheuchzeri. Whereas the species is well documented from Neogene of Central Europe, this is the first record of the genus Andrias from Hungary
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The (truly) first fossil freshwater molluscs from Antarctica PalZ (IF 1.42) Pub Date : 2019-12-02 Sergio Martínez; Roberto A. Scasso; Andrés Elgorriaga; Ignacio Capelli; Rodolfo del Valle; Pablo Puerta; Juan Manuel Lirio; Cecilia Rodríguez Amenábar
New collection work in Mount Flora, Hope Bay, Antarctic Peninsula, has confirmed the presence of bivalve moulds in the Jurassic Mount Flora Formation. In contrast to a twenty-first century article claiming to report the first discovery of fossil freshwater molluscs in Antarctica, evidence of these molluscs was first reported for Antarctica more than 110 years ago by J. Gunnar Andersson. The bivalve
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Morphological diversity of fungal reproductive units in the Lower Devonian Rhynie and Windyfield cherts, Scotland: a new species of the genus Windipila PalZ (IF 1.42) Pub Date : 2019-11-28 Michael Krings, Carla J. Harper
The Lower Devonian Rhynie and Windyfield cherts from Scotland contain a remarkable diversity of microscopic fungal propagules and reproductive units; however, only relatively few of these fossils are described. One of them is Windipila spinifera, an unusual reproductive unit from the Windyfield chert that consists of a walled spheroid (~ 100 µm in diam.) surrounded by a mantle of interlaced hyphae;
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Chondrichthyans from the Lower Clayton Limestone Unit of the Midway Group (Paleocene) near Malvern, Arkansas, USA, with comments on the K/Pg boundary PalZ (IF 1.42) Pub Date : 2019-11-27 Harry M. Maisch; Martin A. Becker; Michael L. Griffiths
The Lower Clayton Limestone Unit (LCLU) of the Midway Group (Paleocene) near Malvern, Arkansas, USA contains an assemblage of chondrichthyans recently exposed by excavation for highway stabilization. Chondrichthyan teeth in this assemblage belong to at least 12 taxa including: Ginglymostoma subafricanum, Carcharias cf. whitei, Carcharias sp., Odontaspis winkleri, Palaeohypotodus rutori, Palaeogaleus
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Differentiating taphonomic and paleopathological features in Vertebrate Paleontology: a study case with Quaternary mammals PalZ (IF 1.42) Pub Date : 2019-11-15 Fernando Henrique de Souza Barbosa; Lucas Henrique Medeiros da Silva; Hermínio Ismael de Araújo-Júnior
The recognition of taphonomic alterations is an important step previously to any paleopathological analysis, as some taphonomic features can simulate pathological change on bones. This is a difficult task, but there are some diagnostic criteria that can be used to differentiate them. Here we demonstrate how these features can be macroscopically distinguished using skeletal remains of Quaternary mammals
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A chasmataspidid affinity for the putative xiphosuran Kiaeria Størmer, 1934 PalZ (IF 1.42) Pub Date : 2019-11-04 James C. Lamsdell
The putative xiphosuran Kiaeria Størmer, 1934, from the Late Silurian (Ludlow) of Ringerike, Norway, is redescribed from the holotype and only known specimen as a chasmataspidid chelicerate arthropod. Morphological features such as the presence of a fused buckler of three opisthosomal segments clearly indicate a chasmataspidid affinity, while the size of Kiaeria, along with the occurrence of a raised
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Cornuproetine (proetide) trilobites with nine thorax segments from the Devonian of Morocco, Germany and the Czech Republic PalZ (IF 1.42) Pub Date : 2019-10-26 Allart van Viersen; Frederik Lerouge
The majority of cornuproetine taxa known from articulated specimens have ten thoracic segments. Here we record rare, well-preserved specimens with nine segments in the Early and Middle Devonian of Morocco, Germany and the Czech Republic. These encompass the genera Lepidoproetus Erben, Sculptoproetus Erben, Macroblepharum Alberti, Koneprusites Přibyl, Paralepidoproetus Alberti, Timsaloproetus Gibb and
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Paleoecological and paleoenvironmental interpretation of three successive macrofloras and palynofloras from the Kola Switch locality, lower Permian (Archer City Formation, Bowie Group) of Clay County, Texas, USA PalZ (IF 1.42) Pub Date : 2019-09-16 William A. DiMichele; Carol L. Hotton; Cindy V. Looy; Robert W. Hook
Fossil floras have been recovered from a unique deposit of early Permian age in North-Central Texas. The site, Kola Switch, preserves three distinct floras in different lithofacies, in a succession from a single outcrop. The sedimentary environment appears to be a floodplain channel fill of primarily siltstones and claystones. The lowermost flora, preserved in a kaolinitic siltstone, indicates active
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Leaf-mimicking katydids from the Middle Miocene of Yunnan, southwestern China (Orthoptera: Tettigoniidae) PalZ (IF 1.42) Pub Date : 2019-09-09 André Nel; Bo Wang; Michael S. Engel; Jian Huang; Lin-Bo Jia; Tao Su; Torsten Wappler
The first fossil leaf-mimicking katydids from the eastern Palaearctic are described and attributed to the genus Archepseudophylla under the names Archepseudophylla nanzhaoica sp. nov. and Archepseudophylla wenshanensis sp. nov., both from the Early to Middle Miocene strata in Wenshan, Yunnan, southwestern China, which is the core of the southwestern China karst region. This pseudophylline genus was
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A new species of Burguklia (Pisces, Actinopterygii) from the Middle Permian of the Volga Region (European Russia) PalZ (IF 1.42) Pub Date : 2019-09-09 Aleksandr Bakaev; Ilja Kogan
A new species of early actinopterygians, Burguklia minichorum sp. nov., is described based on the occurrence of numerous isolated scales from freshwater deposits of the Urzhumian and Severodvinian regional stages (Wordian–Capitanian) of the East European Platform. The type and only hitherto known species of the genus, Burguklia gdali Kazantseva-Selezneva, 1980, comes from the Early Permian of Siberia
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A new anatomically preserved Alloiopteris fern from Moscovian (Bolsovian) volcanoclastics of Flöha (Flöha Basin, SE Germany) PalZ (IF 1.42) Pub Date : 2019-09-09 Josef Pšenička; Ronny Rößler; Jana Frojdová; Stanislav Opluštil; Mathias Merbitz
The morphology and anatomy of a new zygopterid fern are described from the Middle Pennsylvanian (Bolsovian) of Flöha, SE Germany. The fossils occur as allochthonous remains within the basal Schweddey Ignimbrite, which preserves a diverse wetland plant community of cordaitaleans, ferns, pteridosperms, calamitaleans, and lycophytes. Pinnae of Alloiopteris loecsei sp. nov. exhibit a combined carbonized
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Perforocycloides nathalieae new genus and species, an unusual Silurian cyclocystoid (Echinodermata) from Anticosti Island, Québec, Canada PalZ (IF 1.42) Pub Date : 2019-08-22 Timothy A. M. Ewin; Mike Reich; Mark R. Graham; Mario E. Cournoyer
Cyclocystoids are a poorly known, rare, extinct class of bi-facially flattened, disc shaped echinoderms, ranging from the Middle Ordovician to the Early Carboniferous. Articulated cyclocystoids are relatively common in the Ordovician but are rarer in younger strata. Here we describe Perforocycloides nathaliae new genus and species, from the early Silurian of Anticosti Island, Québec, Canada, the first
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Naiadita lanceolata (Marchantiophyta) from the Middle Triassic (Ladinian) of Germany: a new reconstruction attempt and considerations on taphonomy PalZ (IF 1.42) Pub Date : 2019-08-22 Klaus-Peter Kelber
The fossil liverwort Naiadita lanceolata is described here from lacustrine deposits occurring intercalated in the Albertibank complex of the Lower Keuper, Erfurt Formation (Ladinian, Middle Triassic) of Schleerieth, northern Bavaria, Germany. The specimens represent the stratigraphically oldest records of this taxon so far. Leafy gametophytic plants are preserved as impression-compression fossils and
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Ginkgo leaf cuticle chemistry across changing p CO 2 regimes PalZ (IF 1.42) Pub Date : 2019-08-20 Phillip E. Jardine; Matthew Kent; Wesley T. Fraser; Barry H. Lomax
Cuticles have been a key part of palaeobotanical research since the mid-19th Century. Recently, cuticular research has moved beyond morphological traits to incorporate the chemical signature of modern and fossil cuticles, with the aim of using this as a taxonomic and classification tool. For this approach to work, cuticle chemistry would have to maintain a strong taxonomic signal, with a limited input
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The last chapter of 30 million years of molluscan evolution: Permian non-marine bivalves of the Rio do Rasto Formation, Paraná Basin, Brazil PalZ (IF 1.42) Pub Date : 2019-08-02 Vitor B. Guerrini; Suzana A. Matos; Rosemarie Rohn; Filipe G. Varejão; Lucas V. Warren; Marcello G. Simões
The last chapter of the evolutionary history of the Permian (Artinskian–Wuchiapingian) endemic bivalves of the Passa Dois Group, Brazil, is depicted. They evolved in a vast, isolated epeiric sea under progressive continentalization. Previously, bivalves that thrived during times of marked non-marine (limnic) conditions have been poorly investigated. Hence, a systematic survey of the bivalves between
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Regional persistence of the extant coral genus Stephanocoenia since the Early Cretaceous in the Western Atlantic PalZ (IF 1.42) Pub Date : 2019-08-01 Hannes Löser
The scleractinian coral genus Stephanocoenia was previously only known from the Western Atlantic with two Pliocene and two extant species, of which two are considered synonymous. Systematic sampling and examination of collection material revealed that the genus occurs from the Hauterivian to extant with gaps in the fossil record during the Campanian, Paleocene and Eocene. During this time the genus
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Permian gastropods from the Ratburi Limestone, Khao Phrik, Central Thailand PalZ (IF 1.42) Pub Date : 2019-08-01 Chatchalerm Ketwetsuriya; Alex G. Cook; Alexander Nützel
A new silicified Middle Permian gastropod fauna is reported from Central Thailand. It is the first diverse Permian gastropod assemblage described from the Sibumasu terrane. The gastropod fauna comes from fore-reef shallow water carbonates of the Middle Permian (Wordian) limestones of the Ratburi Group exposed at Khao Phrik, Ratchaburi Province. Thirty-four gastropod species are reported, 17 nominate
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A silicified Todea trunk (Osmundaceae) from the Eocene of Patagonia PalZ (IF 1.42) Pub Date : 2019-08-01 Benjamin Bomfleur; Ignacio Escapa
The Osmundaceae family is the sister group to all other extant leptosporangiate ferns. Its rich fossil record has enabled detailed reconstructions of the evolutionary history of the group. Fossil evidence for today’s Southern Hemisphere subtribe Todeinae, however, has been difficult to accumulate, with only two unambiguous fossil occurrences of modern Todea. Here, we describe a silicified Todea stem
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Distinction of Arvernoceros ardei and Cervus perrieri (Cervidae, Mammalia) from the late Pliocene site of Perrier (France) based on the postcranial skeleton: taxonomic and phylogenetic conclusions PalZ (IF 1.42) Pub Date : 2019-08-01 Thekla Pfeiffer-Deml
Characteristics of the postcranial skeleton of Arvernoceros ardei and Cervus perrieri from Perrier (France, late Pliocene, 2.78 ± 0.01 Ma BP, MNQ 16b) are described and distinguished. This was made possible by using the skeletal remains of A. ardei from Kaltensundheim (Germany, Thuringia, late Pliocene age) as identification keys. C. perrieri did not occur in Kaltensundheim. Twenty-five skeletal differences
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The Middle and Late Pleniglacial (Weichselian) malacofauna of the Zemun loess–paleosol sequence, Serbia PalZ (IF 1.42) Pub Date : 2019-08-01 Bojan Gavrilović; Pál Sümegi; Miloš Ćirić; Milica G. Radaković; Milivoj B. Gavrilov; Dragan Mlađan; Slobodan B. Marković
The aim of our study was to describe the succession of malacological assemblages along the exposed loess profile located in Belgrade, along the banks of the Danube River (municipality of Zemun). Deposits that belong to the composite loess unit L1 were sampled. Loess unit L1 included two subunits: L1SS1 (a Middle Pleniglacial subunit with two weakly developed initial pedogenic horizons) and L1LL1 (a
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Did the Czekanowskiales already exist in the late Permian? PalZ (IF 1.42) Pub Date : 2019-08-01 Evelyn Kustatscher; Henk Visscher; Johanna H. A. van Konijnenburg-van Cittert
Isolated capsule-like reproductive organs from the upper Permian of the Southern Alps, NE Italy, are described as Brinkia gen. nov. Two species have been distinguished, i.e. Brinkia kerpiana sp. nov. and B. cortianensis sp. nov. Brinkia capsules resemble in gross morphology single valves of the Leptostrobus-type, Mesozoic reproductive organs belonging to the Czekanowskiales. A czekanowskialean affinity
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Taxonomic notes on Eustrophinae from the mid-Cretaceous Burmese amber, with description of a new species (Coleoptera, Tetratomidae) PalZ (IF 1.42) Pub Date : 2019-08-01 Yun Hsiao
A new polypore fungus beetle species Allostrophus Hsiao, Ślipiński, Yu, Deng and Pang embedded in Upper Cretaceous Burmese amber (Cenomanian, ca. 99 Ma) is described: A. yangi sp. nov.; this new species can be differentiated from its only congener based on its antennomere 11 and fusiform, elongate body. Morphological characters preserved in the inclusion compared to A. cretaceus Hsiao, Ślipiński, Yu
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Unusual preservation of an Ordovician (Floian) arthropod from Peary Land, North Greenland (Laurentia) PalZ (IF 1.42) Pub Date : 2019-07-31 John S. Peel; Sebastian Willman; Stig A. Schack Pedersen
Preservation of a fragment of an arthropod from starved trough sediments of the Bøggild Fjord Formation (Ordovician, Floian) of Johannes V. Jensen Land in north Peary Land, North Greenland, recalls that of the lower Cambrian Sirius Passet Lagerstätte of extreme north-west Peary Land and may suggest a second locality for exceptional preservation in North Greenland. A prominent petaloid pattern on the
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Beetle borings in wood with host response in early Permian conifers from Germany PalZ (IF 1.42) Pub Date : 2019-07-22 Zhuo Feng; Markus Bertling; Robert Noll; Adam Ślipiński; Ronny Rößler
Wood boring represents a common feeding and survival strategy in several lineages of beetles. The larvae of wood-boring beetles hatch and excavate tunnels in wood during their development. The origin and evolutionary history of this life habit, however, remain poorly understood to date, as the fossil record is scarce. We present new silicified conifer wood specimens containing complex borings from
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Pelmatozoan “rooting grounds” from the Early Devonian (late Emsian) Heckelmann Mill Fossil-Lagerstätte (Lahn Syncline, Rhineland-Palatinate, SW-Germany): morphological, palaeoenvironmental and taphonomic aspects PalZ (IF 1.42) Pub Date : 2019-07-15 Markus Poschmann
An exceptionally rich occurrence of pelmatozoan holdfasts from the Early Devonian Heckelmann Mill Lagerstätte in the Lahn Syncline is documented. Two distinct holdfast morphotypes are described, a larger one with clearly separated radicles and a smaller one showing interpenetration of radicles. Both types served to anchor the animals on soft substrates and are designated as terminal dendritic radice
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New discoveries in the frog Latonia seyfriedi (Anura: Alytidae) and their impact on taxonomy of the genus Latonia PalZ (IF 1.42) Pub Date : 2019-07-12 Elena Syromyatnikova; Zbyněk Roček; Sabrina van de Velde
Latonia seyfriedi, the type species of the genus Latonia, was described by von Meyer (1843) based on an articulated skeleton from the middle Miocene (Serravallian) of Öhningen, Germany. Besides the holotype, four additional articulated skeletons are known from the type locality; all display only the ventral aspect. A similar frog reported by Lartet (1851) from the middle Miocene of Sansan, France was
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Helcionelloid molluscs and hyoliths from the Miaolingian (middle Cambrian) of the subsurface of the Delitzsch–Torgau–Doberlug Syncline, northern Saxony, Germany PalZ (IF 1.42) Pub Date : 2019-07-12 Gerd Geyer; John M. Malinky
Miaolingian rocks of the Delitzsch–Torgau–Doberlug Syncline yield Helcionelloida and Hyolitha that are otherwise poorly known from this stratigraphical interval in Central Europe. The two faunal intervals from the lower part of the Wuliuan and the lower part of the Drumian Stage include the helcionelloid genera Helcionella, Marocella and Leptostega, and at least nine different species of hyoliths,
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Frond morphology and epidermal anatomy of Compsopteris wongii (T. Halle) Zalessky from the Permian of Shanxi, China PalZ (IF 1.42) Pub Date : 2019-07-08 Malte Backer; Mingli Wan; Jun Wang
Compsopteris wongii (T. Halle) Zalessky is an enigmatic foliage type with unknown systematic affinities endemic to the Permian Cathaysia flora. Here we describe the frond morphology and epidermal anatomy of C. wongii based on material from the Palougou Section in Shanxi Province, China. Fronds are petiolate (i.e., possess a naked stipe), are once pinnate, and have alethopteroid, linear-oblong pinnules
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Tortodus dodoensis , a new conodont species, and a Givetian (Middle Devonian) conodont fauna from the northern Mackenzie Mountains, northwest Canada PalZ (IF 1.42) Pub Date : 2019-07-08 Sofie A. Gouwy; Thomas T. Uyeno; Alexander D. McCracken
A new conodont species Tortodus dodoensis sp. nov. from the lower part of the Givetian (Middle Devonian) of the Mackenzie Mountains (NW Canada) is described. This paper also reports the lowest stratigraphic occurrence of a Givetian fauna containing a.o. Polygnathus amphora, P. denisbriceae, P. xylus ensensis, P. pseudoeiflius, P. linguiformis klapperi s.l., P. l. weddigei, P. parawebbi and P. pseudofoliatus
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