Ben Creisler
New non-dino papers:
===
Prochelidella buitreraensis sp. nov.Â
Ignacio J. Maniel, Marcelo S. de la Fuente, Sebastian ApesteguÃa, Joaquin PÃrez Mayoral, Maria L. Sanchez, Gonzalo D. Veiga & Ian Smales (2020)
Cranial and postcranial remains of a new species of Prochelidella (Testudines: Pleurodira: Chelidae) from 'La Buitrera' (Cenomanian of Patagonia, Argentina), with comments on the monophyly of this extinct chelid genus from southern Gondwana.
Journal of Systematic Palaeontology (advance online publication)
doi:
https://doi.org/10.1080/14772019.2020.1721579 https://www.tandfonline.com/doi/full/10.1080/14772019.2020.1721579The genus Prochelidella is the oldest known panchelid taxon. It is widely distributed in several Cretaceous basins throughout Patagonia, Argentina. It was previously known from three named species. A fourth species presented herein, Prochelidella buitreraensis sp. nov., preserves both cranial and postcranial material from the Candeleros Formation (La Buitrera Area) of RÃo Negro Province, Argentina. Features observed in the nuchal bone (i.e. wide, trapezoidal cervical vertebrae, shallow nuchal notch) allow us to assign this specimen to the genus Prochelidella. Several specific traits (i.e. a large open retropterygoideum foramen, and a strongly developed muscle attachment site on the basisphenoid) suggest that the form from the Candeleros Formation is a new species of the genus Prochelidella. A phylogenetic analysis that includes the three best-preserved species of Prochelidella recovers this taxon as monophyletic. The Cenomanian age of this new taxon allows us to compare the panchelid turtles from the Patagonian (Neuquen) and Australian (Surat) basins.
http://zoobank.org/urn:lsid:zoobank.org:pub:E9D194C7-126D-46B6-BF75-BD1A51A74971
===
Lida Xing, Kecheng Niu, Donghao Wang, Bruce M. Rothschild & Susan E. Evans (2020)
Palaeopathology in a Cretaceous terrestrial lizard from China.
Historical Biology (advance online publication)
doi:
https://doi.org/10.1080/08912963.2020.1733550 Â
https://www.tandfonline.com/doi/full/10.1080/08912963.2020.1733550The lizard genus Yabeinosaurus is a common and relatively well-known member of Chinese Lower Cretaceous Jehol Biota, found in both the Yixian and Jiufotang formations of north-eastern China. Previous research on Yabeinosaurus has revealed information on its morphology, phylogenetic position, colouration, diet, and viviparous reproductive strategy. Herein we describe a new specimen preserving the skull and postcranial skeleton. The skull shows features characteristic of Yabeinosaurus robustus, but reveals the morphology of the vomer for the first time. In the postcranial skeleton, the most significant feature is a malformation of the fibula resulting from a fracture that occurred several months before the animal died, possibly as the result of intraspecies aggression or a predation attempt.
====