79 downloads
357 views

Background Helopanoplia distincta is an extinct soft-shelled turtle (Pan-Trionychidae) for which the type specimen is a fragmentary costal and the inguinal notch portion of the left hypoplastron from the Late Cretaceous (Maastrichtian) Lance Formation of Wyoming,...

["Evolutionary Studies","Paleontology","Taxonomy"]
doi:10.7717/peerj.4169
168 downloads
1,595 views

Previous investigations document functional and phylogenetic signals in the histology of dinosaur teeth. In particular, incremental lines in dentin have been used to determine tooth growth and replacement rates in several dinosaurian clades. However, to date, few...

["Paleontology","Anatomy and Physiology","Dentistry","Histology"]
doi:10.7717/peerj.4129
96 downloads
916 views

The present study entails descriptions of several well-preserved skulls from the pampathere species Holmesina floridanus, recovered from Pliocene localities in central Florida and housed in the collections of the Florida Museum of Natural History. Bone by bone...

["Evolutionary Studies","Paleontology","Taxonomy"]
doi:10.7717/peerj.4022
130 downloads
686 views

The Permian from China has a well-known terrestrial record where approximately 30 tetrapod taxa, including several therapsids, have been described. However, the record of therocephalians in China has remained elusive. Shiguaignathus wangi gen. et sp. nov., discovered...

["Paleontology","Taxonomy"]
doi:10.7717/peerj.4150
185 downloads
1,833 views

Our knowledge about the body morphology of many extinct early vertebrates is very limited, especially in regard to their post-thoracic region. The prompt disarticulation of the dermo-skeletal elements due to taphonomic processes and the lack of a well-ossified...

["Ecology","Paleontology","Zoology"]
doi:10.7717/peerj.4081
87 downloads
910 views

The dodo (Raphus cucullatus) might be the most enigmatic bird of all times. It is, therefore, highly remarkable that no consensus has yet been reached on its body mass; previous scientific estimates of its mass vary by more than 100%. Until now, the vast amount...

["Mathematical Biology","Paleontology"]
doi:10.7717/peerj.4110
206 downloads
1,008 views

The Wukongopteridae compose a non-pterodactyloid clade of pterosaurs that are the most abundant flying reptiles in the deposits of the Middle-Late Jurassic Yanliao Biota. Until now, five species of three genera and two additional unnamed specimens have been described....

["Paleontology"]
doi:10.7717/peerj.4102
244 downloads
1,564 views

Bears Ears National Monument (BENM) is a new, landscape-scale national monument jointly administered by the Bureau of Land Management and the Forest Service in southeastern Utah as part of the National Conservation Lands system. As initially designated, BENM encompasses...

["Paleontology","Natural Resource Management"]
doi:10.7287/peerj.preprints.3442v1
270 downloads
1,780 views

During the Late Cretaceous, the continent of North America was divided into two sections: Laramidia in the west and Appalachia in the east. Although the sediments of Appalachia recorded only a sparse fossil record of dinosaurs, the dinosaur faunas of this landmass...

["Biogeography","Paleontology","Taxonomy"]
doi:10.7717/peerj.4123
1,573 downloads
2,588 views

Although the evolution and function of “exaggerated” bony projections in ornithischian dinosaurs has been subject to significant debate recently, our understanding of the structure and morphology of their epidermal keratinized coverings is greatly limited. The...

["Evolutionary Studies","Paleontology"]
doi:10.7717/peerj.4066
104 downloads
801 views

The latitudinal distributions in Devonian–Cretaceous ammonoids were analyzed at the genus level, and were compared with the hatchling sizes (i.e., ammonitella diameters) and the geological durations. The results show that (1) length of temporal ranges of ammonoids...

["Evolutionary Studies","Marine Biology","Paleontology","Zoology"]
doi:10.7717/peerj.4108
314 downloads
1,740 views

Many of the major locomotor transitions during the evolution of Archosauria, the lineage including crocodiles and birds as well as extinct Dinosauria, were shifts from quadrupedalism to bipedalism (and vice versa). Those occurred within a continuum between more...

["Evolutionary Studies","Paleontology"]
doi:10.7717/peerj.3976
80 downloads
168 views

Background. A wealth of data on the networks of ecological interactions present in the modern biota can be readily obtained, due to the ease of unlimited access to the living organisms that form these networks. In contrast, understanding of such interactions in...

["Evolutionary Studies","Paleontology","Plant Science"]
doi:10.7287/peerj.preprints.3422v1
70 downloads
1,441 views

Hörnig, Haug & Haug (2017) published a description of a new specimen of Santanmantis axelrodi MB.I.2068, an extinct species of praying mantis from the Crato Formation of Brazil. According to Hörnig, Haug & Haug (2017), the discovery of this new specimen brought...

["Evolutionary Studies","Paleontology","Zoology"]
doi:10.7717/peerj.4046
612 downloads
1,241 views

Xenoposeidon proneneukos is a sauropod dinosaur represented by a single partial dorsal vertebra, NHMUK R2095, which consists of the centrum and the base of a tall neural arch. Despite its fragmentary nature, it is recognisably distinct from all other sauropods,...

["Evolutionary Studies","Paleontology"]
doi:10.7287/peerj.preprints.3415v1

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