Peer-reviewed Articles

841 downloads
9,262 views

A set of associated left pedal elements of a sauropod dinosaur from the Upper Jurassic Morrison Formation in Weston County, Wyoming, is described here. Several camarasaurids, a nearly complete small brachiosaur, and a small diplodocid have been found at this locality,...

["Biogeography","Paleontology"]
doi:10.7717/peerj.5250
2 citations
691 downloads
3,141 views

We present the first comprehensive review of the present and past shark and ray diversity in marine waters of Tropical America, examining the patterns of distribution in the Eastern Central Pacific (EP) and Western Central Atlantic (WA) realms. We identified the...

["Biodiversity","Biogeography","Paleontology"]
doi:10.7717/peerj.5313
178 downloads
836 views

Ostracoderms (fossil armoured jawless fishes) shed light on early vertebrate evolution by revealing the step-wise acquisition of jawed vertebrate characters, and were important constituents of Middle Palaeozoic vertebrate faunas. A wide variety of head shield shapes...

["Evolutionary Studies","Paleontology"]
doi:10.7717/peerj.5249
1 citation
1,460 downloads
14,742 views

A partial ankylosaurid skeleton from the upper Campanian Kaiparowits Formation of southern Utah is recognized as a new taxon, Akainacephalus johnsoni, gen. et sp. nov. The new taxon documents the first record of an associated ankylosaurid skull and postcranial...

["Biodiversity","Biogeography","Evolutionary Studies","Paleontology","Taxonomy"]
doi:10.7717/peerj.5016
222 downloads
1,267 views

Nitraria is a halophytic taxon (i.e., adapted to saline environments) that belongs to the plant family Nitrariaceae and is distributed from the Mediterranean, across Asia into the south-eastern tip of Australia. This taxon is thought to have originated in Asia...

["Biogeography","Evolutionary Studies","Molecular Biology","Paleontology"]
doi:10.7717/peerj.5055
1 citation
746 downloads
1,866 views

Xenoposeidon proneneukos is a sauropod dinosaur from the Early Cretaceous Hastings Group of England. It is represented by a single partial dorsal vertebra, NHMUK PV R2095, which consists of the centrum and the base of a tall neural arch. Despite its fragmentary...

["Evolutionary Studies","Paleontology"]
doi:10.7717/peerj.5212
146 downloads
1,645 views

One of the first endocasts of a dipnoan (lungfish) to be realised was that of the Upper Devonian taxon Chirodipterus australis. This early interpretation was based on observations of the shape of the cranial cavity alone and was not based on a natural cast or ‘steinkern’...

["Evolutionary Studies","Paleontology"]
doi:10.7717/peerj.5148
342 downloads
2,587 views

The cuticle layer consisting mainly of lipids and hydroxyapatite (HAp) atop the mineralized avian eggshell is a protective structure that prevents the egg from dehydration and microbial invasions. Previous ornithological studies have revealed that the cuticle layer...

["Ecology","Paleontology"]
doi:10.7717/peerj.5144
764 downloads
3,315 views

The Kimmeridgian Vega, Tereñes and Lastres formations of Asturias have yielded a rich vertebrate fauna, represented by both abundant tracks and osteological remains. However, skeletal remains of theropod dinosaurs are rare, and the diversity of theropod tracks...

["Evolutionary Studies","Paleontology"]
doi:10.7717/peerj.4963
633 downloads
2,895 views

Chasmosaurine ceratopsids are well documented from the Upper Cretaceous (Campanian) Dinosaur Park Formation (DPF) of southern Alberta and Saskatchewan, and include Chasmosaurus belli, Chasmosaurus russelli, Mercuriceratops gemini, Vagaceratops irvinensis, and material...

["Evolutionary Studies","Paleontology","Taxonomy"]
doi:10.7717/peerj.5194
148 downloads
741 views

Fossil polypterids are mainly represented by disarticulated material, most of them pinnules. However, there is no study that proves the taxonomical validity of these structures. Here we describe the pinnules of four species of extant polypterids and report for...

["Paleontology","Taxonomy","Zoology"]
doi:10.7717/peerj.5083
149 downloads
672 views

Pavocosa sp. (Lycosidae) burrows found in an open sparsely vegetated area on the edge of the Gran Salitral saline lake, in central Argentina, are described. Burrows were studied by capturing the occupant and casting them with dental plaster. The hosting sediments...

["Animal Behavior","Paleontology"]
doi:10.7717/peerj.5054
322 downloads
1,031 views

Dapedium is one of the most abundant and diverse genera of ganoid fishes from the Early Jurassic fossil lagerstätte of Europe. In spite of its abundance, however, its timing of extinction is poorly constrained, with the youngest described material being Early Jurassic...

["Paleontology","Taxonomy"]
doi:10.7717/peerj.5033
296 downloads
873 views

The Prozostrodontia includes a group of Late Triassic-Early Cretaceous eucynodonts plus the clade Mammaliaformes, in which Mammalia is nested. Analysing their growth patterns is thus important for understanding the evolution of mammalian life histories. Obtaining...

["Evolutionary Studies","Paleontology","Histology"]
doi:10.7717/peerj.5029
188 downloads
1,783 views

A fossil whale from the Hikatagawa Formation (Middle Miocene, 15.2–11.5 Ma) of Hokkaido, Japan is described as a new genus and species Taikicetus inouei and its phylogenetic position is examined. Consistent with the result of Marx, Lambert & de Muizon (2017), the...

["Evolutionary Studies","Paleontology"]
doi:10.7717/peerj.4934

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