Peer-reviewed Articles - Biology

A cervical vertebra of the large, pelagic pterodactyloid pterosaur Pteranodon sp. from the Late Cretaceous Niobrara Formation of Kansas, USA is significant for its association with a tooth from the large lamniform shark, Cretoxyrhina mantelli. Though the tooth...

["Paleontology"]
doi:10.7717/peerj.6031
399 downloads
1,231 views

Phytosauria is a clade of large, carnivorous, semi-aquatic archosauromorphs which reached its peak diversity and an almost global distribution in the Late Triassic (c. 230–201 Mya). Previous phylogenetic analyses of Phytosauria have either focused primarily on...

["Evolutionary Studies","Paleontology","Taxonomy"]
doi:10.7717/peerj.5901
156 downloads
653 views

Background The phylogenetic placement of Cretaceous marine turtles, especially Protostegidae, is still under debate among paleontologists. Whereas protostegids were traditionally thought to be situated within the clade of recent marine turtles (Chelonioidea), some...

["Evolutionary Studies","Paleontology"]
doi:10.7717/peerj.5964
647 downloads
3,802 views

During the Early Cretaceous, dinosaur communities of the Australian-Antarctic rift system (Eumeralla and Wonthaggi formations) cropping out in Victoria were apparently dominated by a diverse small-bodied ‘basal ornithopod’ fauna. Further north, in Queensland (Winton...

["Paleontology","Taxonomy"]
doi:10.7717/peerj.6008
79 downloads
686 views

Two peccary species, Mylohyus elmorei and Prosthennops serus are described from the medium-bodied fauna of the Gray Fossil Site (GFS) of northeastern Tennessee. This site, recognized as an oak-hickory forest, is latest Hemphillian or earliest Blancan based on mammalian...

["Paleontology","Taxonomy"]
doi:10.7717/peerj.5926
171 downloads
951 views

The chambered shells of cephalopod mollusks, such as modern Nautilus and fossil ammonoids, have the potential to float after death, which could result in significant postmortem transport of shells away from living habitats. Such transport would call into question...

["Paleontology","Zoology"]
doi:10.7717/peerj.5909
279 downloads
972 views

Thalattosuchians are a group of Mesozoic crocodylomorphs known from aquatic deposits of the Early Jurassic–Early Cretaceous that comprises two main lineages of almost exclusively marine forms, Teleosauridae and Metriorhynchoidea. Teleosaurids were found in shallow...

["Evolutionary Studies","Paleontology","Taxonomy","Zoology"]
doi:10.7717/peerj.5686
125 downloads
684 views

Twisted winged insects (Strepsiptera) are a highly specialized small order of parasitic insects. Whether parasitism developed at an early or late stage in the evolution of the group was unknown. Here we record and describe the first definite Mesozoic strepsipteran...

["Entomology","Paleontology","Taxonomy"]
doi:10.7717/peerj.5943
168 downloads
1,005 views

The vertebrate fauna of the Late Cretaceous Mussentuchit Member of the Cedar Mountain Formation has been studied for nearly three decades, yet the fossil-rich unit continues to produce new information about life in western North America approximately 97 million...

["Biodiversity","Biogeography","Paleontology","Taxonomy"]
doi:10.7717/peerj.5883
108 downloads
413 views

Background Piramys auffenbergi was described as an emydine turtle based on a well-preserved skull retrieved from late Miocene deposits exposed on Piram Island, India. The description and figures provided in the original publication are vague and do not support...

["Paleontology","Taxonomy"]
doi:10.7717/peerj.5938
1,034 downloads
3,861 views

The most complete known North American enantiornithine was collected in 1992 but never formally described. The so-called “Kaiparowits avisaurid” remains one of the most exceptional Late Cretaceous enantiornithine fossils. We recognize this specimen as a new taxon,...

["Evolutionary Studies","Paleontology"]
doi:10.7717/peerj.5910
385 downloads
1,234 views

The Cretaceous Kem Kem beds of Morocco and equivalent beds in Algeria have produced a rich fossil assemblage, yielding, amongst others, isolated sauropod teeth, which can be used in species diversity studies. These Albian-Cenomanian (∼113–93.9 Ma) strata rarely...

["Biodiversity","Biogeography","Paleontology","Taxonomy"]
doi:10.7717/peerj.5925
645 downloads
2,089 views

Integumentary patterns and colors can differentiate species, sexes, and life changes and can inform on habitat and ecology. However, they are rarely preserved in the fossil record. Here, we report on an extremely well-preserved specimen of the Cretaceous bird Confuciusornis...

["Evolutionary Studies","Paleontology"]
doi:10.7717/peerj.5831
248 downloads
826 views

Background Many neritic to nearshore species of marine adapted turtle from the Late Cretaceous of North America are thought to represent the stem lineage of Cheloniidae but due to fragmentary holotypes, low total specimen counts, and resultantly incomplete morphological...

["Evolutionary Studies","Marine Biology","Paleontology","Taxonomy"]
doi:10.7717/peerj.5876
470 downloads
1,633 views

This paper is the first of a three-part series that investigates the architecture of cancellous (‘spongy’) bone in the main hindlimb bones of theropod dinosaurs, and uses cancellous bone architectural patterns to infer locomotor biomechanics in extinct non-avian...

["Evolutionary Studies","Paleontology","Zoology"]
doi:10.7717/peerj.5778

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