Preprints (not yet peer-reviewed)

16 downloads
53 views

A conglomerate bed from the Tournaisian Ballagan Formation of Scotland preserves a rich array of vertebrate and other non-marine fossils providing an insight into the wider ecosystem and palaeoenvironment that existed during this pivotal stage of Earth history....

["Evolutionary Studies","Paleontology"]
doi:10.7287/peerj.preprints.27102v1
108 downloads
223 views

The Atlantic gray whale (Eschrichtius robustus) presents an interesting case study of climate related dispersal and local extinction. While (limited) fossil records confirm its presence in the Atlantic until the 18th century, its abundance and distribution with...

["Biogeography","Conservation Biology","Ecology","Paleontology"]
doi:10.7287/peerj.preprints.27025v2
807 downloads
2,050 views

Synopsis: Tyrannosaurid dinosaurs had larger than predicted preserved leg muscle attachments and low rotational inertia relative to their body mass, indicating that they could turn more quickly than other large theropods. Methods: To compare turning capability...

["Evolutionary Studies","Paleontology","Zoology"]
doi:10.7287/peerj.preprints.27021v1
326 downloads
732 views

Crocodyliformes have undergone few modifications in their morphology since they have emerged. The change in the position of the choana was important during the evolutionary history of this group. Such character is relevant in the phylogenetic position of many crocodyliforms....

["Paleontology"]
doi:10.7287/peerj.preprints.26956v1
830 downloads
1,541 views

It is widely accepted that birds evolved from theropod dinosaurs, and few paleontologists disagree preferring a more ancient split of the avian and dinosaur lineages. The difference in digestive physiology between members of the theropod and crocodile lineages,...

["Evolutionary Studies","Paleontology","Zoology","Anatomy and Physiology"]
doi:10.7287/peerj.preprints.26902v2
62 downloads
235 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:10.7287/peerj.preprints.26892v1
152 downloads
480 views

Background. Yunnanolepidoids constitute either the basal-most consecutive segments or the most primitive clade of antiarchs, a highly diversified jawed vertebrate group from the Silurian and Early Devonian periods. Although the general morphology of yunnanolepidoids...

["Evolutionary Studies","Paleontology","Zoology"]
doi:10.7287/peerj.preprints.26867v1
343 downloads
813 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),...

["Evolutionary Studies","Paleontology"]
doi:10.7287/peerj.preprints.26863v1
69 downloads
229 views

Acquiring data on the occurrences of many types of difficult to identify objects are often still made by human observation, e.g. in biodiversity and paleontologic research. Existing computer counting programs used to record such data have various limitations, including...

["Biodiversity","Bioinformatics","Ecology","Paleontology"]
doi:10.7287/peerj.preprints.26836v1
700 downloads
1,279 views

During the Cretaceous period, North America was divided into two landmasses, the eastern Appalachia and western Laramidia. Recent research on several sites scattered across the eastern margin of North America has allowed for the analysis of vertebrate faunas from...

["Biogeography","Paleontology","Taxonomy","Zoology"]
doi:10.7287/peerj.preprints.26829v1
45 downloads
182 views

Despite an estimated molecular divergence date of 40 million years (middle Eocene) between wombats and their closest living relative, the koala, the fossil record of wombats is poor. The two oldest described wombats, Nimbavombatus boodjamullensis and Rhizophascolonus...

["Evolutionary Studies","Paleontology","Taxonomy"]
doi:10.7287/peerj.preprints.26828v1
68 downloads
163 views

The ‘Lessepsian invasion’ – the massive influx of Indo-Pacific biota into the Mediterranean Sea via the Suez Canal – is the largest marine biological invasion. The lack of data on pre-invasion community composition, however, severely impairs our understanding to...

["Ecology","Marine Biology","Paleontology","Environmental Impacts"]
doi:10.7287/peerj.preprints.26762v1
149 downloads
534 views

The amphicyonid, or “bear-dog,” Paradaphoenus was a small-bodied, hypercarnivorous carnivoran that lived in North America during the Oligocene. Specimens of Paradaphoenus are rare, in part owing to the common inaccurate referral of specimens to the abundant canid...

["Biogeography","Paleontology"]
doi:10.7287/peerj.preprints.26735v1
125 downloads
259 views

Pavocosa sp. (Lycosidae) burrows found in an open sparsely vegetated area on the edge of the saline lake the “Gran Salitral”, 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:10.7287/peerj.preprints.26674v1
109 downloads
152 views

The Messinian stromatolites belonging to the Terminal Carbonate Complex unit, from the northern sector of the Bajo Segura Basin (CAM section, Sierra del Colmenar, SE Spain) have been studied. To understand the direct relationship between the morphologies of the...

["Marine Biology","Paleontology"]
doi:10.7287/peerj.preprints.26648v1
What is a PeerJ Preprint?

A PeerJ Preprint is a draft of an article, abstract, or poster that has not yet been peer-reviewed for formal publication. Submit a draft, incomplete, or final version of your work for free.

Submissions today can be approved by Editorial Staff and online in 24 hours.

Establish precedent. Solicit feedback. Publish updates.

Refine by manuscript type

Top subject areas - Preprints

Top subject areas - People

View all subject areas