20 downloads
112 views

The Bahariya formation is one of the most productive in Africa in terms of fossil material. This paper conducts a comprehensive review of the flora & fauna and creates ecological reconstruction of this assemblage based on modern analogues. There is no evidence...

["Ecology","Ecosystem Science","Paleontology"]
doi:10.7287/peerj.preprints.2470v1
53 downloads
774 views

The skull of leporids (rabbits and hares) is highly transformed, typified by pronounced arching of the dorsal skull and ventral flexion of the facial region (i.e., facial tilt). Previous studies show that locomotor behavior influences aspects of cranial shape in...

["Evolutionary Studies","Paleontology","Zoology"]
doi:10.7717/peerj.2453
129 downloads
714 views

The Ziphiidae (beaked whales) represent a large group of open-ocean odontocetes (toothed cetaceans), whose elusive and deep diving behavior prevents direct observation in their natural habitat. Despite their generally large body size, broad geographical distribution,...

["Evolutionary Studies","Marine Biology","Paleontology","Taxonomy","Zoology"]
doi:10.7717/peerj.2479
112 downloads
886 views

Madagascar’s subfossil record preserves a diverse community of animals including elephant birds, pygmy hippopotamus, giant lemurs, turtles, crocodiles, bats, rodents, and carnivorans. These fossil accumulations give us a window into the island’s past from 80,000...

["Evolutionary Studies","Paleontology"]
doi:10.7717/peerj.2296
1,077 downloads
5,824 views

Barosaurus is a diplodocid sauropod from the Upper Jurassic Morrison Formation of the western United States, and is known for its very long neck. It is closely related to the sympatric Diplodocus, and often thought of as more or less identical except with a longer...

["Animal Behavior","Evolutionary Studies","Paleontology"]
doi:10.7287/peerj.preprints.67v2
159 downloads
1,245 views

The evolution of complexly folded septa in ammonoids has long been a controversial topic. Explanations of the function of these folded septa can be divided into physiological and mechanical hypotheses with the mechanical functions tending to find widespread support....

["Computational Biology","Marine Biology","Paleontology","Zoology"]
doi:10.7717/peerj.2434
879 downloads
3,810 views

Rauisuchids are large (2–6 m in length), carnivorous, and quadrupedal pseudosuchian archosaurs closely related to crocodylomorphs. Though geographically widespread, fossils of this clade are relatively rare in Late Triassic assemblages. The middle Norian (∼212...

["Evolutionary Studies","Paleontology"]
doi:10.7717/peerj.2336
120 downloads
212 views

Reconstructing the timescale of the Tree of Life is one of the principal aims of evolutionary biology. This has been greatly aided by the development of the molecular clock, which enables evolutionary timescales to be estimated from genetic data. In recent years,...

["Biogeography","Evolutionary Studies","Genetics","Genomics","Paleontology"]
doi:10.7287/peerj.preprints.2403v1
591 downloads
4,637 views

Pterosaurs are an extinct group of highly modified flying reptiles that thrived during the Mesozoic. This group has unique and remarkable skeletal adaptations to powered flight, including pneumatic bones and an elongate digit IV supporting a wing-membrane. Two...

["Paleontology"]
doi:10.7717/peerj.2311
219 downloads
1,096 views

Aetosaurians are some of the most common fossils collected from the Upper Triassic Chinle Formation of Arizona, especially at the Petrified Forest National Park (PEFO). Aetosaurians collected from lower levels of the park include Desmatosuchus spurensis, Paratypothorax,...

["Paleontology","Taxonomy"]
doi:10.7717/peerj.2411
224 downloads
794 views

Background. The primarily Neotropical distribution of living alligatoroids raises questions as to when and how the ancestors of Alligator sinensis migrated to China. As phylogeny provides a necessary framework for historical biogeographic issues, determining the...

["Paleontology","Taxonomy","Zoology"]
doi:10.7717/peerj.2356
185 downloads
1,162 views

Footprint morphology (e.g., outline shape, depth of impression) is one of the key diagnostic features used in the interpretation of ancient vertebrate tracks. Over 80 tridactyl tracks, confined to the same bedding surface in the Lower Jurassic Elliot Formation...

["Environmental Sciences","Paleontology"]
doi:10.7717/peerj.2285
411 downloads
292 views

Most reconstruction methods for genomes of ancient origin that are used today require a closely related reference. In order to identify genomic rearrangements or the deletion of whole genes, de novo assembly has to be used. However, because of inherent problems...

["Bioinformatics","Paleontology","Computational Science"]
doi:10.7287/peerj.preprints.2383v1
21 downloads
93 views

Background. Now-a-day territory of Western Siberia has the poorest diversity of amphibians and reptiles within the Palaearctic Realm, influenced by unfavourable climate. Less is known about the origin and emergence of it. Aside from better-explored European Neogene...

["Biodiversity","Biogeography","Paleontology","Taxonomy","Zoology"]
doi:10.7287/peerj.preprints.2365v1
361 downloads
3,200 views

The diversification of crown cetacean lineages (i.e., crown Odontoceti and crown Mysticeti) occurred throughout the Oligocene, but it remains an ongoing challenge to resolve the phylogenetic pattern of their origins, especially with respect to stem lineages. One...

["Ecology","Evolutionary Studies","Marine Biology","Paleontology","Zoology"]
doi:10.7717/peerj.2321

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