Dabasacanthus inskasi ?

Dabasacanthus inskasi Zangerl, 1979 ?

    Middle Pennsylvanian

    Pit 11

    Mazon Creek

    Illinois

    USA

    This fish belongs to the Hybodontformes (fossil sharks). The preservation is poor and there is not much to see, but two hybodontoid dorsal spines are clearly visible.