421 downloads
2,701 views

Ouranosaurus nigeriensis is an iconic African dinosaur taxon that has been described on the basis of two nearly complete skeletons from the Lower Cretaceous Gadoufaoua locality of the Ténéré desert in Niger. The entire holotype and a few bones attributed to the...

["Evolutionary Studies","Paleontology"]
doi:10.7717/peerj.3403
105 downloads
401 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...

["Ecology","Paleontology","Taxonomy"]
doi:10.7287/peerj.preprints.2479v2
48 downloads
392 views

Background The Saururaceae, a very small family of Piperales comprising only six species in four genera, have a relatively scanty fossil record outside of Europe. The phylogenetic relationships of the four genera to each other are resolved, with the type genus...

["Paleontology","Plant Science"]
doi:10.7717/peerj.3434
294 downloads
2,434 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 1920s, numerous hypotheses...

["Ecosystem Science","Evolutionary Studies","Paleontology"]
doi:10.7717/peerj.3368
252 downloads
1,574 views

Distinguishing the difference between theropod and ornithopod footprints has proved a difficult task due to their similarities. Herein our aim was to produce a method where a skeleton could be more closely matched to actual fossilised footprints. The reconstructed...

["Paleontology"]
doi:10.7717/peerj.3427
74 downloads
532 views

The morphology and affinities of newly discovered disc-shaped, soft-bodied fossils from the early Cambrian (Series 2: Stage 4, Dyeran) Carrara Formation are discussed. These specimens show some similarity to the Ordovician Discophyllum Hall, 1847; traditionally...

["Paleontology","Taxonomy","Zoology"]
doi:10.7717/peerj.3312
1 citation
317 downloads
2,461 views

While large mass mortality events (MMEs) are well known for toothed whales, they have been rare in baleen whales due to their less gregarious behavior. Although in most cases the cause of mortality has not been conclusively identified, some baleen whale mortality...

["Conservation Biology","Ecosystem Science","Marine Biology","Paleontology","Zoology"]
doi:10.7717/peerj.3123
217 downloads
1,177 views

The early fossil record of insects is scarce, with only few finds in the Devonian. All these finds appear problematic and controversial, partly due to incomplete preservation and challenging interpretation of many structures. We provide details of one of these...

["Entomology","Paleontology","Zoology"]
doi:10.7717/peerj.3402
266 downloads
1,475 views

For many years the precise taxonomy of Titanosauria has been a puzzle, and even today only certain segments of this vast clade are well-understood. The phylogenetic positions of many titanosaurs are murky, though specimens often still await rigorous analysis. One...

["Biogeography","Paleontology","Taxonomy"]
doi:10.7287/peerj.preprints.2988v1
311 downloads
3,177 views

Ceratopsids (“horned dinosaurs”) are known from western North America and Asia, a distribution reflecting an inferred subaerial link between the two landmasses during the Late Cretaceous. However, this clade was previously unknown from eastern North America, presumably...

["Biogeography","Paleontology"]
doi:10.7717/peerj.3342
143 downloads
854 views

One new genus and three new species of Lygistorrhinidae in early Eocene Cambay amber from India are described, which significantly increases our knowledge about this group in the Eocene. Lygistorrhina indica n. sp. is the oldest fossil known from this extant genus....

["Entomology","Paleontology"]
doi:10.7717/peerj.3313
131 downloads
808 views

Background Discovered on the southern margin of the North Sea Basin, “Phoca” vitulinoides represents one of the best-known extinct species of Phocidae. However, little attention has been given to the species ever since its original 19th century description. Newly...

["Evolutionary Studies","Paleontology","Taxonomy","Zoology"]
doi:10.7717/peerj.3316
91 downloads
402 views

The Early to Late Oligocene Propalaeocastor is the earliest known beaver genus from Eurasia. Although many species of this genus have been described, these species are defined based on very fragmentary specimens. Propalaeocastor irtyshensis from the Early Oligocene...

["Biogeography","Evolutionary Studies","Paleontology","Taxonomy"]
doi:10.7717/peerj.3311
202 downloads
978 views

Pleistocene South American megafauna has traditionally attracted the interest of scientists and the popular media alike. However, ecological interactions between the species that inhabited these ecosystems, such as predator-prey relationships or interspecific competition,...

["Paleontology"]
doi:10.7717/peerj.3117
363 downloads
2,579 views

Background Anhanguerids comprise an important clade of pterosaurs, mostly known from dozens of three-dimensionally preserved specimens recovered from the Lower Cretaceous Romualdo Formation (northeastern Brazil). They are remarkably diverse in this sedimentary...

["Paleontology","Zoology"]
doi:10.7717/peerj.3285

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