Peer-reviewed Articles

117 downloads
648 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
105 downloads
531 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
297 downloads
876 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
249 downloads
755 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
159 downloads
1,555 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
202 downloads
1,181 views

Zygodactylidae are an extinct lineage of perching birds characterized by distinct morphologies of the foot and wing elements. Although the clade has a complex taxonomic history, current hypotheses place Zygodactylidae as the sister taxon to Passeriformes (i.e.,...

["Biogeography","Evolutionary Studies","Paleontology","Taxonomy"]
doi:10.7717/peerj.4950
225 downloads
1,256 views

Neobalaenines are an enigmatic group of baleen whales represented today by a single living species: the pygmy right whale, Caperea marginata, found only in the Southern Hemisphere. Molecular divergence estimates date the origin of pygmy right whales to 22–26 Ma,...

["Marine Biology","Paleontology","Zoology"]
doi:10.7717/peerj.5025
111 downloads
757 views

Plants and insects are constantly interacting in complex ways through forest communities since hundreds of millions of years. Those interactions are often related to variations in the climate. Climate change, due to human activities, may have disturbed these relationships...

["Ecology","Ecosystem Science","Paleontology","Plant Science"]
doi:10.7717/peerj.5075
489 downloads
1,458 views

A new three-dimensionally preserved troodontid specimen consisting of most of the skull, partial mandibles and six articulated cervical vertebrae (PMOL-AD00102) from the Early Cretaceous Yixian Formation of Beipiao, western Liaoning, China is identified as Sinovenator...

["Paleontology","Taxonomy","Zoology"]
doi:10.7717/peerj.4977
85 downloads
575 views

We present two cases of study of ontogenetic allometry in outlines of bivalves using longitudinal data, a rarity among fossils, based on the preserved post-larval record of shells. The examples are two infaunal burrowing bivalves of the southern South America,...

["Evolutionary Studies","Marine Biology","Paleontology","Zoology"]
doi:10.7717/peerj.5051
337 downloads
1,757 views

The reproduction of titanosaur dinosaurs is still a complex and debated topic. Their Late Cretaceous nesting sites are distributed worldwide and their eggs display substantial morphological variations according to the parent species. In contrast to the typical...

["Evolutionary Studies","Paleontology"]
doi:10.7717/peerj.4971
379 downloads
1,538 views

Direct evidence of paleoecological processes is often rare when the fossil record is poor, as in the case of the Cretaceous of eastern North America. Here, I describe a femur and partial tibia shaft assignable to theropods from two Late Cretaceous sites in New...

["Ecology","Paleontology"]
doi:10.7717/peerj.4973
1 citation
495 downloads
2,348 views

The early evolution of gorgonopsians is poorly understood. New material from the Kotelnich locality in Russia expands our knowledge of middle/earliest late Permian gorgonopsians from Laurasia. Two gorgonopsian taxa are recognized from Kotelnich: Viatkogorgon ivakhnenkoi...

["Paleontology","Taxonomy","Zoology"]
doi:10.7717/peerj.4954
1 citation
569 downloads
3,123 views

A new therocephalian taxon (Gorynychus masyutinae gen. et sp. nov.) is described based on a nearly complete skull and partial postcranium from the Permian Kotelnich locality of Russia. Gorynychus displays an unusual mixture of primitive (“pristerosaurian”) and...

["Paleontology","Zoology"]
doi:10.7717/peerj.4933
189 downloads
1,182 views

The Clarkia lagerstätte (Latah Formation) of Idaho is well known for its beautifully preserved plant fossils as well as a fauna of insects and fish. Here we present the first known tetrapod fossil from these deposits. This specimen, recovered from the lower anoxic...

["Paleontology","Taxonomy","Zoology"]
doi:10.7717/peerj.4880

Refine by manuscript type

Top subject areas - Articles

Top subject areas - People

View all subject areas