†order Iniopterygiformes Zangerl and Case 1973 (chimaera)
Chondrichthyes - Iniopterygiformes
Parent taxon: Holocephali according to R. van der Laan 2019
Sister taxa: Chimaeri, Debeeriformes, Debeeriiformes, Delphyodontos, Desmiodontidae, Desmiodus, Edaphodus, Eugeneodontiformes, Gregoriidae, Harpacanthidae, Helodontiformes, Holocephalomorpha, Lagarodontidae, Macrodontacanthus, Menaspacanthus, Orodontiformes, Paraselachiamorpha, Paraselachimorpha, Petalodontiformes, Thoralodus, Trachyacanthi, Cynopodius, Mesolophodus, Euglossodus, Metaxyacanthus, Ageleodus, Pseudodontichthyidae
Subtaxa: none
Ecology: nektobenthic carnivore
Distribution: found only at Hansen quarry, quarry 6, Wea Shale (Carboniferous of Nebraska)