Peer-reviewed Articles - Biology

207 downloads
1,541 views

Mosasauroid squamates represented the apex predators within the Late Cretaceous marine and occasionally also freshwater ecosystems. Proper understanding of the origin of their ecological adaptations or paleobiogeographic dispersals requires adequate knowledge of...

["Evolutionary Studies","Paleontology","Taxonomy","Zoology"]
doi:10.7717/peerj.3782
179 downloads
787 views

Postcranial remains of Boreogomphodon from the Upper Triassic of North Carolina are described and compared to those of other known traversodontid cynodonts. The postcranial skeleton of Boreogomphodon is characterized by four sacral ribs, simple ribs lacking costal...

["Paleontology"]
doi:10.7717/peerj.3521
79 downloads
617 views

Pondweed bugs (Hemiptera: Mesoveliidae), considered a sister group to all other Gerromorpha, are exceedingly rare as fossils. Therefore, each new discovery of a fossil mesoveliid is of high interest, giving new insight into their early evolutionary history and...

["Ecology","Entomology","Paleontology","Taxonomy","Zoology"]
doi:10.7717/peerj.3760
227 downloads
1,505 views

Mammals as a rule have seven cervical vertebrae, a number that remains remarkably constant. Changes of this number are associated with major congenital abnormalities (pleiotropic effects) that are, at least in humans, strongly selected against. Recently, it was...

["Ecology","Evolutionary Studies","Paleontology","Veterinary Medicine","Pathology"]
doi:10.7717/peerj.3684
539 downloads
6,409 views

Protoporphyrin (PP) and biliverdin (BV) give rise to the enormous diversity in avian egg coloration. Egg color serves several ecological purposes, including post-mating signaling and camouflage. Egg camouflage represents a major character of open-nesting birds...

["Evolutionary Studies","Paleontology"]
doi:10.7717/peerj.3706
156 downloads
755 views

Most knowledge concerning Mesozoic Era floras has come from compression fossils. This has been augmented in the last 20 years by rarer permineralized material showing cellular preservation. Here, we describe a new genus of anatomically preserved gymnosperm seed...

["Paleontology","Plant Science","Taxonomy"]
doi:10.7717/peerj.3723
351 downloads
1,556 views

Locating breeding sites is definitely a key to understanding the ecological requirements and maintaining the sustainability of populations/species. Here I re-examined published specimens of an extinct baleen whale, Parietobalaena yamaokai, from the lower part of...

["Animal Behavior","Conservation Biology","Ecology","Paleontology","Zoology"]
doi:10.7717/peerj.3711
369 downloads
1,477 views

Denticles are small, tooth-like protrusions that are commonly found on the palate of early tetrapods. Despite their widespread taxonomic occurrence and similar external morphology to marginal teeth, it has not been rigorously tested whether denticles are structurally...

["Paleontology","Histology"]
doi:10.7717/peerj.3727
132 downloads
756 views

Background Passerines (Aves: Passeriformes) dominate modern terrestrial bird communities yet their fossil record is limited. Liang Bua is a large cave on the Indonesian island of Flores that preserves Late Pleistocene–Holocene deposits (∼190 ka to present day)....

["Biogeography","Paleontology","Zoology"]
doi:10.7717/peerj.3676
306 downloads
1,640 views

Dinocephalian therapsids are renowned for their massive, pachyostotic and ornamented skulls adapted for head-to-head fighting during intraspecific combat. Synchrotron scanning of the tapinocephalid Moschops capensis reveals, for the first time, numerous anatomical...

["Evolutionary Studies","Neuroscience","Paleontology"]
doi:10.7717/peerj.3496
215 downloads
1,277 views

The interplay between the pectoral module (the pectoral girdle and limbs) and the pelvic module (the pelvic girdle and limbs) plays a key role in shaping avian evolution, but prior empirical studies on trait covariation between the two modules are limited. Here...

["Evolutionary Studies","Paleontology","Zoology"]
doi:10.7717/peerj.3622
168 downloads
1,434 views

A new fossil species of salticid spider (Araneae: Salticidae) is described based on an amber-embedded specimen. The specimen was collected from lignite-sandstone early-mid Miocene sediments near the town of Totolapa in Chiapas, southwestern Mexico. The diagnosis...

["Biodiversity","Entomology","Paleontology","Taxonomy","Zoology"]
doi:10.7717/peerj.3614
311 downloads
3,943 views

Mantodeans or praying mantises are flying insects and well known for their raptorial behaviour, mainly performed by their first pair of thoracic appendages. We describe here a new, exceptionally preserved specimen of the early mantodean Santanmantis axelrodi Grimaldi,...

["Evolutionary Studies","Paleontology","Zoology"]
doi:10.7717/peerj.3605
1 citation
1,180 downloads
22,570 views

The running ability of Tyrannosaurus rex has been intensively studied due to its relevance to interpretations of feeding behaviour and the biomechanics of scaling in giant predatory dinosaurs. Different studies using differing methodologies have produced a very...

["Mathematical Biology","Paleontology","Zoology"]
doi:10.7717/peerj.3420
162 downloads
955 views

The Osmundales (Royal Fern order) originated in the late Paleozoic and is the most ancient surviving lineage of leptosporangiate ferns. In contrast to its low diversity today (less than 20 species in six genera), it has the richest fossil record of any extant group...

["Paleontology","Plant Science","Taxonomy"]
doi:10.7717/peerj.3433

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