Print ISSN: 0031-0247
Online ISSN: 2274-0333
A pangolin from the French Quercy phosphorites
The origin of dinosaurs
The geologically youngest remains of an ornithocheirid pterosaur from the late Cenomanian (Late Cretaceous) of northeastern Mexico with implications on the paleogeography and extinction of Late Cretaceous ornithocheirids
Les traces de pas d'amphibiens, de dinosaures et autres reptiles du Mesozoïque Français
The skull of Tetraceratops
Les artiodactyles du gisement yprésien terminal de Premontre (Aisne, France)Artiodactyls; France; Mammals; new species; Ypresian
Cite this article: Sudre J., Erfurt J., 1996. Les artiodactyles du gisement yprésien terminal de Premontre (Aisne, France). Palaeovertebrata 25 (2-4): 391-414.
The artiodactyls (Mammalia) from the latest Ypresian locality of Prémontré from the Paris Basin (niveau repère MP 10 in the lower Eocene of the Paris Basin) are described in this paper. Three species have been identified: 1) Diacodexis cf. varleti SUDRE et al., 1983; 2) a new species of Eurodexis ERFURT & SUDRE (E. russelli nov. sp.) defined after the revision of the species Messelobunodon? ceciliensis from the Lutetian beds of Geiseltal (Germany); and 3) Eurodexeinae indet., a probable ancestor of another form from the Geiseltal which was previously recorded as Homacodon? sp. (Erfurt 1993) and now named Parahexacodus germanicus. The two later forms are referred to the new subfamily Eurodexeinae (Erfurt & Sudre 1996). The analysis of these forms as weIl as comparative studies have led us to reconsider our previous conclusions regarding the content of the species Protodichobune oweni LEMOINE 1878 and some aspects of Ypresian diacodexid evolution. One can postulate that the divergence of E. russelli nov. sp. occurred during the first radiation of these primitive artiodactyls. Some other stem form with bunodont teeth such as Protodichobune and Aumelasia have also differentiated from Diacodexis. Like Eurodexis, these two genera persist during the middle Eocene. The absence of Protodichobune and Aumelasia at Prémontré is probably due to particular ecological conditions.
Published in Vol. 25, Fasc. 2-4 (1996)