Eoplethodus chaneti gen. et sp. nov. de l’Albien (Crétacé) marin de Provence (France) et l’évolution du squelette caudal chez les Tselfatiiformes (Osteichthyes: Teleostei)
Taverne, L. (2000). Eoplethodus chaneti gen. et sp. nov. de l’Albien (Crétacé) marin de Provence (France) et l’évolution du squelette caudal chez les Tselfatiiformes (Osteichthyes: Teleostei). Cybium 24(4): 371-381
In: Cybium. Muséum national d'Histoire naturelle: Paris. ISSN 0399-0974; e-ISSN 2101-0315, more
|   |
| Keywords |
Geological time > Phanerozoic > Geological time > Mesozoic > Cretaceous > Cretaceous, Lower > Albian
Actinopterygii [WoRMS]; Eoplethodus chaneti; Tselfatiiformes
Europe, France [Marine Regions]
Marine/Coastal |
| Author keywords |
Tselfatiiformes; Eoplethodus chaneti; France; Albian; caudal skeleton |
| Abstract |
The caudal skeleton of Eoplethodus chaneti gen, and sp. nov., a fossil teleost from the marine Albian (Cretaceous) of France is described. This fish belongs to the cohort Clupeocephala and the order Tselfatiiformes (=Bananogmiiformes). The caudal skeleton of E. chaneti still offers a well developed preural 1 vertebra, three epurals, a pair of stegurals, and normal preural 1 hemal arch and parhypural. It is thus more primitive than the one of the Plethodidae, the family grouping all the other genera of this order, where the preural 1 vertebra is reduced, the epurals and parhypural lost, the preural 1 hemal arch atrophied or lost, and the pair of stegurals changed into a false preural 1 neural spine. E. chaneti allows a better understanding of the evolution of the caudal skeleton within the Tselfatiiformes. |
|
