Un paléoniscoïde (Pisces, Actinopterygii) de Buxières-les-Mines, témoin des affinités fauniques entre Massif central et Bohême au passage Carbonifère-Permien


fr Geodiversitas 21 (2) - Pages 147-155

Published on 24 June 1999

A paleoniscoid (Pisces, Actinopterygii) from Buxières-les-Mines, evidence of faunal relationships between Massif central and Bohemia at the turn over between Carboniferous and Permian.

Description of a paleoniscoid, Progyrolepis heyleri n. sp., based on nine isolated maxillaries and mandibles on shale slabs from the Lower Permian (Autunian) of the Aumance basin (Massif central). These specimens, six to nine centimeters long, have two rows of marginal teeth (external small, internal large), conical with an acrodin cap. The postorbital plate of the maxillary is rather long, low and trapezoidal. The generic attribution of this fish is based on the similitude of its very characteristic ornamentation with that of P. speciosus (Upper Carboniferous, Bohemia). This is a new indication that there was no biogeographical barrier between the basins of the limnic faunas of Massif central and of Bohemia during the Upper Carboniferous and Lower Permian.

Keywords :

Actinopterygii, Paleoniscoid, Autunian, France, Massif central, Bohemia