Peer-reviewed Articles

Ceratopsids (“horned dinosaurs”) are known from western North America and Asia, a distribution reflecting an inferred subaerial link between the two landmasses during the Late Cretaceous. However, this clade was previously unknown from eastern North America, presumably...

["Biogeography","Paleontology"]
doi:10.7717/peerj.3342
92 downloads
614 views

One new genus and three new species of Lygistorrhinidae in early Eocene Cambay amber from India are described, which significantly increases our knowledge about this group in the Eocene. Lygistorrhina indica n. sp. is the oldest fossil known from this extant genus....

["Entomology","Paleontology"]
doi:10.7717/peerj.3313
76 downloads
632 views

Background Discovered on the southern margin of the North Sea Basin, “Phoca” vitulinoides represents one of the best-known extinct species of Phocidae. However, little attention has been given to the species ever since its original 19th century description. Newly...

["Evolutionary Studies","Paleontology","Taxonomy","Zoology"]
doi:10.7717/peerj.3316
53 downloads
287 views

The Early to Late Oligocene Propalaeocastor is the earliest known beaver genus from Eurasia. Although many species of this genus have been described, these species are defined based on very fragmentary specimens. Propalaeocastor irtyshensis from the Early Oligocene...

["Biogeography","Evolutionary Studies","Paleontology","Taxonomy"]
doi:10.7717/peerj.3311
160 downloads
835 views

Pleistocene South American megafauna has traditionally attracted the interest of scientists and the popular media alike. However, ecological interactions between the species that inhabited these ecosystems, such as predator-prey relationships or interspecific competition,...

["Paleontology"]
doi:10.7717/peerj.3117
316 downloads
2,385 views

Background Anhanguerids comprise an important clade of pterosaurs, mostly known from dozens of three-dimensionally preserved specimens recovered from the Lower Cretaceous Romualdo Formation (northeastern Brazil). They are remarkably diverse in this sedimentary...

["Paleontology","Zoology"]
doi:10.7717/peerj.3285
159 downloads
622 views

The fossil record of Australian pterosaurs is sparse, consisting of only a small number of isolated and fragmentary remains from the Cretaceous of Queensland, Western Australia and Victoria. Here, we describe two isolated pterosaur teeth from the Lower Cretaceous...

["Paleontology","Taxonomy"]
doi:10.7717/peerj.3256
747 downloads
3,174 views

Brachiosauridae is a clade of titanosauriform sauropod dinosaurs that includes the well-known Late Jurassic taxa Brachiosaurus and Giraffatitan. However, there is disagreement over the brachiosaurid affinities of most other taxa, and little consensus regarding...

["Evolutionary Studies","Paleontology"]
doi:10.7717/peerj.3217
611 downloads
2,919 views

Diplodocids are among the best known sauropod dinosaurs. Numerous specimens of currently 15 accepted species belonging to ten genera have been reported from the Late Jurassic to Early Cretaceous of North and South America, Europe, and Africa. The highest diversity...

["Paleontology","Taxonomy"]
doi:10.7717/peerj.3179
105 downloads
612 views

Thousands of vertebrate fossils have been recovered from the Gray Fossil Site, Tennessee, dating to the Miocene-Pliocene boundary. Among these are but eight specimens of bats representing two different taxa referable to the family Vespertilionidae. Comparison of...

["Biogeography","Paleontology","Taxonomy","Zoology"]
doi:10.7717/peerj.3263
56 downloads
265 views

Background The Eocene was the warmest epoch of the Cenozoic and recorded the appearance of several orders of modern mammals, including the first occurrence of Euprimates. During the Eocene, Euprimates were mainly represented by two groups, adapiforms and omomyiforms,...

["Anthropology","Biodiversity","Paleontology","Taxonomy","Zoology"]
doi:10.7717/peerj.3239
160 downloads
577 views

A small juvenile turtle is described from the Early Cretaceous Jehol Biota, shedding light on the juvenile morphology and ontogeny of Manchurochelys manchoukuoensis. Several juvenile features are uncovered, such as a small and circular carapace (less than half...

["Developmental Biology","Paleontology"]
doi:10.7717/peerj.3274
244 downloads
1,405 views

Thalattosuchians were highly specialised aquatic archosaurs of the Jurassic and Early Cretaceous, and represent a peak of aquatic adaptation among crocodylomorphs. Relatively little is known of their endocranial anatomy or its relevance for the evolution of sensory...

["Paleontology","Zoology"]
doi:10.7717/peerj.3225
148 downloads
567 views

New Pleistocene fossilized turtle remains from five localities of western Ecuador (Santa Elena Province) are described here. All these shell (carapace and plastron) fossil remains come from the Tablazo Formation and belong to three different lineages of cryptodires...

["Biodiversity","Evolutionary Studies","Paleontology","Taxonomy","Histology"]
doi:10.7717/peerj.3215
200 downloads
996 views

Metoposaurids are temnospondyl amphibians that are commonly recovered from the Chinle Formation deposits of North America. Two species, Koskinonodon perfectus and Apachesaurus gregorii, are known from Petrified Forest National Park (PEFO), AZ. Small, elongate intercentra...

["Evolutionary Studies","Paleontology","Taxonomy","Histology"]
doi:10.7717/peerj.3183

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