†family Echinochimaeridae (chimaera)
Chondrichthyes - Chimaeriformes - Echinochimaeridae
Parent taxon: Echinochimaeroidei according to J. S. Nelson 2006
Sister taxa: none
Subtaxa: Echinochimaera
Ecology: nektobenthic carnivore
Distribution: found only at MV 7106, Supercrop Quarry, Bear Gulch (Carboniferous of Montana)