Peer-reviewed Articles

97 downloads
878 views

Background In this paper, we propose a new method, named the intervals’ method, to analyse data from finite element models in a comparative multivariate framework. As a case study, several armadillo mandibles are analysed, showing that the proposed method is useful...

["Animal Behavior","Mathematical Biology","Paleontology"]
doi:10.7717/peerj.3793
412 downloads
3,994 views

Fossils are almost always represented by hard tissues but we present here the exceptional case of a three-dimensionally preserved specimen that was ‘mummified’ (likely between 40 and 34 million years ago) in a terrestrial karstic environment. This fossil is the...

["Paleontology","Zoology"]
doi:10.7717/peerj.3861
109 downloads
1,241 views

Rodents are the most speciose group of mammals and display a great ecological diversity. Despite the greater amount of ecomorphological information compiled for extant rodent species, studies usually lack of morphological data on dentition, which has led to difficulty...

["Ecology","Paleontology"]
doi:10.7717/peerj.3646
276 downloads
1,808 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
227 downloads
956 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
103 downloads
803 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
267 downloads
1,741 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
697 downloads
7,717 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
182 downloads
872 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
377 downloads
1,704 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
463 downloads
1,754 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
150 downloads
859 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
1 citation
324 downloads
1,779 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
235 downloads
1,373 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
182 downloads
1,506 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

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