Paleobiology

Just out | Tooth enamel microstructures of three Jurassic euharamiyidans and implications for tooth enamel evolution in allotherian mammals @ Journal of Vertebrate Paleontology

Just out @ Journal of Vertebrate Paleontology Tooth enamel microstructures of three Jurassic euharamiyidans and implications for tooth enamel evolution in allotherian mammals Author(s) Fang-Yuan Mao, Yuan-Qing Wang, Shun-Dong Bi, Jian Guan & Jin Meng Abstract: Incisor enamel microstructures of three euharamyidans, Shenshou lui, Xianshou linglong, and X. songae, from the early Late Jurassic Yanliao Biota, Liaoning Province, China, are reported. The enamel of the three species consists of columnar divergence

Just out | On the purported presence of fossilized collagen fibres in an ichthyosaur and a theropod dinosaur @ Palaeontology

Just out @ Palaeontology On the purported presence of fossilized collagen fibres in an ichthyosaur and a theropod dinosaur Author(s) Fiann M. Smithwick, Gerald Mayr, Evan T. Saitta, Michael J. Benton, Jakob Vinther Abstract: Since the discovery of exceptionally preserved theropod dinosaurs with soft tissues in China in the 1990s, there has been much debate about the nature of filamentous structures observed in some specimens. Sinosauropteryx was the first non-avian

Just out | Strontium Distribution in Upper Devonian Conodont Elements: A Palaeobiological Proxy @ Rivista Italiana di Paleontologia e Stratigrafia

Just out @ Rivista Italiana di Paleontologia e Stratigrafia Strontium Distribution in Upper Devonian Conodont Elements: A Palaeobiological Proxy Author(s) Andrey V. Zhuravlev, Sergey S. Shevchuk Abstract: Conodonts are an extinct group of marine animals possessing debated affinities. The conodont elements are composed of calcium phosphate [apatite (CaF)] and collagen-like proteins. Distribution of Sr in the bioapatite of albid, lamellar and paralamellar tissues of some Upper Devonian conodont element crowns

Just out | Late Pleistocene Last Occurences of the Narrow-Nosed Rhinoceros Stephanorhinus Hemitoechus (Mammalia, Perissodactyla) in Italy @ Rivista Italiana di Paleontologia e Stratigrafia

Just out @ Rivista Italiana di Paleontologia e Stratigrafia Late Pleistocene Last Occurences of the Narrow-Nosed Rhinoceros Stephanorhinus Hemitoechus (Mammalia, Perissodactyla) in Italy Author(s) Luca Pandolfi, Paolo Boscato, Jacopo Crezzini, Maurizio Gatta, Adriana Moroni, Mario Rolfo, Antonio Tagliacozzo Abstract: Several taxa belonging to the so called megafauna became extinct during the late Quaternary in Eurasia. The extinction chronology of the narrow-nosed rhinoceros, Stephanorhinus hemitoechus, in Europe is still uncertain and only

Just out | Morphological and histological evidence for the oldest known softshell turtles from Japan @ Journal of Vertebrate Paleontology

Just out @ Journal of Vertebrate Paleontology Morphological and histological evidence for the oldest known softshell turtles from Japan Author(s) Yasuhisa Nakajima, Igor G. Danilov, Ren Hirayama, Teppei Sonoda & Torsten M. Scheyer Abstract: Herein we report morphologically and histologically diagnostic trionychid specimens from the Barremian–Aptian (129.4–113.0 Ma) of Japan. One specimen (FPDM-V9487) is an associated skeleton that consists of a scapula, a humerus, an ischium, and hypoplastra. The limb and

Just out | A new elasmosaurid (Sauropterygia, Plesiosauria) from the Bearpaw Shale (Late Cretaceous, Maastrichtian) of Montana demonstrates multiple evolutionary reductions of neck length within Elasmosauridae @ Journal of Vertebrate Paleontology

Just out @ Journal of Vertebrate Paleontology A new elasmosaurid (Sauropterygia, Plesiosauria) from the Bearpaw Shale (Late Cretaceous, Maastrichtian) of Montana demonstrates multiple evolutionary reductions of neck length within Elasmosauridae Author(s) Danielle J. Serratos, Patrick Druckenmiller & Roger B. J. Benson Abstract: Plesiosauria is a diverse clade of marine reptiles that have been studied since the early 19th century. However, phylogenetic relationships within the group have been contentious due to limited

Just out | A morphological study of the first known piscivorous enantiornithine bird from the Early Cretaceous of China @ Journal of Vertebrate Paleontology

Just out @ Journal of Vertebrate Paleontology A morphological study of the first known piscivorous enantiornithine bird from the Early Cretaceous of China Author(s) Min Wang & Zhonghe Zhou Abstract: A fish-eating enantiornithine bird with a gastric pellet composed of fish bones has recently been reported from the Lower Cretaceous Jiufotang Formation of Liaoning Province, northeastern China. Along with other discoveries, this specimen reveals that distinct features of modern avian digestive

Just out | A geochemical study of the Ediacaran discoidal fossil Aspidella preserved in limestones: Implications for its taphonomy and paleoecology @ Geobiology

Just out @ Geobiology A geochemical study of the Ediacaran discoidal fossil Aspidella preserved in limestones: Implications for its taphonomy and paleoecology Author(s) N. Bykova, B. C. Gill, D. Grazhdankin, V. Rogov, S. Xiao Abstract: The Ediacara biota features the rise of macroscopic complex life immediately before the Cambrian explosion. One of the most abundant and widely distributed elements of the Ediacara biota is the discoidal fossil Aspidella, which is

Just out | Cretaceous Saurophthiridae (Aphaniptera) as pupiparous pre-fleas of diving pterosaurs @ Paleontological Journal

Just out @ Paleontological Journal Cretaceous Saurophthiridae (Aphaniptera) as pupiparous pre-fleas of diving pterosaurs Author(s) D. E. Shcherbakov Abstract: By analogy with bat ectoparasites, it is assumed that Saurophthirus, a permanent ectoparasite of pterosaurs, was pupiparous (the female gave birth to a mature larva, which pupated immediately). The enlarged tracheal trunks containing air for the larva developing in the mother’s uterus indicate that Saurophthirus was a parasite of diving pterosaurs. The