†order Iniopterygiformes Zangerl and Case 1973 (chimaera)
Chondrichthyes - Iniopterygiformes
Parent taxon: Holocephali according to J. A. Long 2011
Sister taxa: Chimaeri, Debeeriformes, Debeeriiformes, Delphyodontos, Edaphodus, Eugeneodontiformes, Helodontiformes, Holocephalomorpha, Macrodontacanthus, Menaspacanthus, Orodontiformes, Paraselachiamorpha, Paraselachimorpha, Petalodontiformes, Thoralodus, Trachyacanthi, Metaxyacanthus, Euglossodus, Gregoriidae, Brachyrhizodus, Desmiodus, Mesolophodus, Ageleodus, Cynopodius, Lagarodontidae, Pseudodontichthyidae
Subtaxa: none
Ecology: nektobenthic carnivore
Distribution: found only at Hansen quarry, quarry 6, Wea Shale (Carboniferous of Nebraska)