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THE ELASMOSAURID PLESIOSAUR ARISTONECTES CABRERA FROM THE LATEST CRETACEOUS OF SOUTH AMERICA AND ANTARCTICA
The dental morphology and peculiar occlusal pattern, forming an interlocking trap, suggest that Aristonectes strained a diet of small, soft organisms from the water.
REDESCRIPTION AND PHYLOGENETIC POSITION OF CAYPULLISAURUS (ICHTHYOSAURIA: OPHTHALMOSAURIDAE)
- M. Fernández
- Geography, BiologyJournal of Paleontology
- 1 March 2007
Simultaneous, unconstrained analysis, using unambiguous character optimization, is suggested as the best way to analyze data sets with large amounts of missing data.
A new Senonian peirosaurid (Crocodylomorpha) from Argentina and a synopsis of the South American Cretaceous crocodilians
ABSTRACT Lomasuchus palpebrosus no v. gen. et sp., from the Upper Cretaceous of northwestern Patagonia (Argentina), is described. Lomasuchus is a “mesosuchian” crocodile with a relatively narrow…
A Metriorhynchid Crocodyliform Braincase from Northern Chile
ABSTRACT A three-dimensionally preserved metriorhynchid braincase from the Oxfordian of northern Chile is described. The specimen is referred to the metriorhynchid Metriorhynchus cf. M.…
Skull Anatomy of the Bizarre Crocodylian Mourasuchus nativus (Alligatoridae, Caimaninae)
The goal of this study is to provide new data on skull morphology and cranial recesses in Mourasuchus nativus, including a new tomography analysis (3D modeling) and it is observed that several diagnostic characters of Purussaurus, such as lack of contact between the nasal and lacrimal, separation of the frontal by the prefrontals, and the posterior dorsal margin of the skull table, are shared with Mour asuchus.
A new ichthyosaur from the Los Molles Formation (early Bajocian), Neuquen Basin, Argentina
- M. Fernández
- Environmental Science, Geography
- 1 July 1999
The holotype of M. periallus new species represents, along with the type of Chacaicosaurus cayi that was found at the same locality, the only diagnostic ichthyosaur specimens from the Aalenian-Bathonian interval.
First Diagnostic Marine Reptile Remains from the Aalenian (Middle Jurassic): A New Ichthyosaur from Southwestern Germany
A new species of ichthyosaur is described based on a partial articulated specimen from the Middle Jurassic of southwestern Germany that bears numerous similarities in size and in morphology to the Lower Jurassic species of the genus Stenopterygius and provides additional evidence that the major ecological changes hypothesized to have occurred at the end of the Toarcian took place sometime after this point and most likely did not occur suddenly.
The Cranial Osteology and Feeding Ecology of the Metriorhynchid Crocodylomorph Genera Dakosaurus and Plesiosuchus from the Late Jurassic of Europe
It is hypothesized that trophic specialisation enabled these two large-bodied species to coexist in the same ecosystem and is supported by Plesiosuchus manselii having a very large optimum gape, while Dakosaurus maximus possesses craniomandibular characteristics observed in extant suction-feeding odontocetes.
ICHTHYOSAURIAN EYES: PALEOBIOLOGICAL INFORMATION CONTENT IN THE SCLEROTIC RING OF CAYPULLISAURUS (ICHTHYOSAURIA, OPHTHALMOSAURIA)
New insights are presented into the growth pattern and vision capabilities of some Jurassic ichthyosaurs as inferred from the analysis of the sclerotic rings and orbit sizes, which suggest the suggested growth pattern of ICHthyosaur eyes is similar to that of human eyes.
Salt glands in the Jurassic metriorhynchid Geosaurus: implications for the evolution of osmoregulation in Mesozoic marine crocodyliforms
The presence of salt-excreting glands in extinct marine sauropsids has been long suspected based on skull morphology. Previously, we described for the first time the natural casts of salt-excreting…