Sibyrhynchidae, Zangerl & Case, 1973

Pradel, Alan, 2010, Skull and brain anatomy of Late Carboniferous Sibyrhynchidae (Chondrichthyes, Iniopterygia) from Kansas and Oklahoma (USA), Geodiversitas 32 (4), pp. 595-661 : 604-607

Sibyrhynchidae gen. et sp. indet.

MATERIAL EXAMINED. — KUNHM 22060, KUNHM 21894, KUNHM 56360, KUNHM 12492 and OKM 38.

REMARKS

The braincases described here (KUNHM 22060, KUNHM21894,KUNHM56360,KUNHM12492 and OKM 38) are very close to those in all three genera described by Zangerl & Case (1973) (see discussions). Nevertheless, the diagnosis of the latter is incomplete principally because of the flatness and the split of the specimens. It is therefore difficult to assign the new specimens described here to known genera with accuracy. The teeth, the overall morphology and the different structures

A A

of the neurocranium are smilar in all these new specimens. They are thus considered as belonging to the same genus.