†family Echinochimaeridae (chimaera)
Chondrichthyes - Chimaeriformes - Echinochimaeridae
Parent taxon: Echinochimaeroidei according to J. S. Nelson 2006
Sister taxa: none
Subtaxa: Echinochimaera
Ecology: nektobenthic carnivore
Distribution:
• Carboniferous of United States (2: Montana collections)
Total: 2 collections each including a single occurrence