Zoeken
Zoeken kan via de modus 'eenvoudig zoeken' (één veld) of uitgebreid via 'geavanceerd zoeken' (meerdere velden). Zo kan je bv. zoeken op een combinatie van een auteursnaam (auteur), een jaartal (jaar) en een documenttype.
Boekenmand
Nuttige resultaten kan je aanvinken en toevoegen aan een mandje. De inhoud hiervan kan je exporteren of afdrukken (naar bv. PDF).
RSS
Op de hoogte blijven van nieuw toegevoegde publicaties binnen uw interessegebied? Dit kan door een RSS-feed (?) te maken van jouw zoekopdracht.
nieuwe zoekopdracht
Anatomy and phylogeny of the gavialoid crocodylian Eosuchus lericheifrom the Paleocene of Europe
Delfino, M.; Piras, P.; Smith, T. (2005). Anatomy and phylogeny of the gavialoid crocodylian Eosuchus lericheifrom the Paleocene of Europe. Acta Palaeontol. Pol. 50(3): 565-580
In: Acta Palaeontologica Polonica. Polska Akademia Nauk. Instytut Paleobiologii: Warszawa. ISSN 0567-7920; e-ISSN 1732-2421
|   |
| Trefwoorden |
Geological time > Phanerozoic > Geological time > Cenozoic > Paleogene > Paleocene
Crocodylia [WoRMS]; Crocodylomorpha; Eosuchus; Gavialidae
Marien/Kust |
| Author keywords |
crocodylia; Gavialidae; Eosuchus; transoceanic dispersal;osmoregulation; Paleocene; Jeumont; Erquelinnes |
| Auteurs | | Top |
- Delfino, M.
- Piras, P.
- Smith, T.
|
|
|
| Abstract |
Originally designated by Dollo in 1907, the holotype of Eosuchus lerichei has never been carefully described but simply cited and compared in a number of papers. This work is an attempt to fill this gap and to place this taxon in a cladistic phylogenetic context. E. lerichei can be considered a valid basal gavialoid from late Paleocene of North Western Europe, sharing the presence of extremely enlarged foramina aerea on quadrates with the coeval Eosuchus minor from eastern North America (formerly described as Gavialis minor). These two species can be considered sister taxa and, for priority reason, they should be both ascribed to genus Eosuchus. The results of the cladistic analysis show that the European species possess characters that can be considered as slightly derived if compared to those of its American relative, suggesting an eastward dispersion from North America before the Paleocene-Eocene boundary and before the full opening of the Atlantic Ocean or local evolution from a basal gavialoid stock similar to E. minor. Both species of Eosuchus come from marine outcrops and represent a further evidence for the salt-water tolerance of the earliest stages of Gavialoidea evolutionary history. Despite the present endemicity of the only living gharial, Gavialis gangeticus, the historical biogeography of gavialoids shows a lost global distribution and reveals several transoceanic dispersals. |
IMIS is ontwikkeld en wordt gehost door het VLIZ.
