†suborder Echinochimaeroidei (chimaera)
Chondrichthyes - Chimaeriformes
Parent taxon: Chimaeriformes according to R. van der Laan 2019
See also Long 2011, Nelson 2006 and Nelson et al. 2016
Sister taxa: Callorhynchidae, Chimaeroidei, Chimeroidei, Icthypriapus, Myracanthiodei, Myriacanthoidei, Squalorajoidei
Subtaxa: Echinochimaeridae
Ecology: nektobenthic carnivore
Distribution:
• Carboniferous of United States (2: Montana collections)
Total: 2 collections each including a single occurrence