Preprints (not yet peer-reviewed)

102 downloads
679 views

The Cleveland-Lloyd Dinosaur Quarry (CLDQ) is the densest deposit of Jurassic theropod dinosaurs discovered to date. Unlike typical Jurassic bone deposits, it is dominated by the presence of Allosaurus fragilis. Since excavation began in the 1920’s numerous hypotheses...

["Ecosystem Science","Evolutionary Studies","Paleontology"]
doi:10.7287/peerj.preprints.2600v1
103 downloads
416 views

The patella is a sesamoid bone located in the major extensor tendon of the knee joint, in the hindlimb of many tetrapods. Although numerous aspects of knee morphology are ancient and conserved among most tetrapods, the evolutionary occurrence of the patella is...

["Evolutionary Studies","Paleontology","Zoology","Anatomy and Physiology"]
doi:10.7287/peerj.preprints.2594v1
193 downloads
1,552 views

Late Cretaceous deposits of the North American Western Interior represent the best, if not only, opportunity to construct a high-resolution chronostratigraphic framework within which to conduct continental-scale geological and paleontological analyses. This is...

["Evolutionary Studies","Paleontology"]
doi:10.7287/peerj.preprints.2554v1
77 downloads
109 views

Pachycormids occupy a key position within Actinopterygii, as part of the Holostei- Teleostei Transition, although their precise position in this hierarchy has been fought over for some years. Discoveries in the last three years have expanded our global knowledge...

["Aquaculture, Fisheries and Fish Science","Evolutionary Studies","Marine Biology","Paleontology","Zoology"]
doi:10.7287/peerj.preprints.2550v1
118 downloads
625 views

Thalattosuchians were highly specialised marine archosaurs of the Jurassic and Early Cretaceous, and represent a peak of aquatic adaptation among crocodylomorphs. Relatively little is known of their endocranial anatomy or its relevance for the evolution of sensory...

["Paleontology","Zoology"]
doi:10.7287/peerj.preprints.2539v1
45 downloads
104 views

Here we describe and illustrate 31 Miocene corals species from the Siamaná and Jimol Formations that were collected over two expeditions in the Guajira basin, Colombia during 2011 and 2014. Corals include 25 species, derived from 15 different genera and 12 families....

["Marine Biology","Paleontology"]
doi:10.7287/peerj.preprints.2507v1
61 downloads
223 views

We herein examine the only known non-planispirally coiled early Devonian ammonoid, the holotype specimen of Ivoites opitzi, to investigate if the host was encrusted in vivo and if these sclerobionts were responsible for the trochospiral coiling observed on this...

["Paleontology","Taxonomy"]
doi:10.7287/peerj.preprints.2479v1
190 downloads
592 views

The Bahariya formation is one of the most productive in Africa in terms of fossil material. This paper conducts a comprehensive review of the flora & fauna and creates ecological reconstruction of this assemblage based on modern analogues. There is no evidence...

["Ecology","Ecosystem Science","Paleontology"]
doi:10.7287/peerj.preprints.2470v1
1,108 downloads
6,400 views

Barosaurus is a diplodocid sauropod from the Upper Jurassic Morrison Formation of the western United States, and is known for its very long neck. It is closely related to the sympatric Diplodocus, and often thought of as more or less identical except with a longer...

["Animal Behavior","Evolutionary Studies","Paleontology"]
doi:10.7287/peerj.preprints.67v2
161 downloads
307 views

Reconstructing the timescale of the Tree of Life is one of the principal aims of evolutionary biology. This has been greatly aided by the development of the molecular clock, which enables evolutionary timescales to be estimated from genetic data. In recent years,...

["Biogeography","Evolutionary Studies","Genetics","Genomics","Paleontology"]
doi:10.7287/peerj.preprints.2403v1
473 downloads
349 views

Most reconstruction methods for genomes of ancient origin that are used today require a closely related reference. In order to identify genomic rearrangements or the deletion of whole genes, de novo assembly has to be used. However, because of inherent problems...

["Bioinformatics","Paleontology","Computational Science"]
doi:10.7287/peerj.preprints.2383v1
57 downloads
196 views

Background. Now-a-day territory of Western Siberia has the poorest diversity of amphibians and reptiles within the Palaearctic Realm, influenced by unfavourable climate. Less is known about the origin and emergence of it. Aside from better-explored European Neogene...

["Biodiversity","Biogeography","Paleontology","Taxonomy","Zoology"]
doi:10.7287/peerj.preprints.2365v1
283 downloads
1,093 views

The fossil record of dinosaurs from the Early Cretaceous of eastern North America is scant, especially since few formations from the east are fossiliferous. Among those that are is the Arundel Formation of the eastern seaboard, which has produced among the best...

["Biogeography","Paleontology"]
doi:10.7287/peerj.preprints.2308v2
133 downloads
206 views

Synchrotron-based techniques offer a wealth of elemental, molecular, and structural insights in biological samples, but the application of these techniques to fossils is a relatively new development. Here we examine how Synchrotron Radiation Micro X-Ray Fluorescence...

["Entomology","Paleontology","Science and Medical Education"]
doi:10.7287/peerj.preprints.2337v1
124 downloads
550 views

Background. The estimation of body mass of long extinct species of the family Felidae has been a focus of paleontology. However, most utilized methods impose expected proportions on the fossil specimens being estimated, resulting in a high chance of underestimation...

["Paleontology","Zoology"]
doi:10.7287/peerj.preprints.2327v2
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