Parent taxon: Conodontophorida according to J. S. Nelson et al. 2016
See also Dineley and Metcalf 1999, Donoghue et al. 2008, Long 2011 and Sepkoski 2002
Sister taxa: Algherella, Alternognathus, Amydrotaxis, Angulodus, Axiothea, Caenodontus, Chirognathacea, Declinognathodus, Dentacodina, Dichodella, Distacodontacea, Elsonella, Embaysgnathus, Eocarniodus, Evencodus, Exochognathus, Fryxellodontacea, Fungulodus, Geniculatus, Hibbardellacea, Hindeodelloides, Hindeodina, Homoiranognathus, Huddlella, Istorinus, Laterignathus, Leutorhinion, Mestognathidae, Mitrellotaxis, Neocavitella, Norigondolella, Oligodus, Ozarcodina, Panderodontacea, Paraprionodus, Pavlovites, Playfordia, Polygnathellus, Prattognathus, Pravognathus, Proconodontacea, Pseudosweetognathus, Ptilognathus, Rhodalepus, Roundya, Schopfodus, Sibiriodus, Steptotaxis, Subbryantodus, Tuxekania, Volgelgnathus, Windsorgnathus, Zieglericonus
Subtaxa: Acodina Aldridgeodus Aldridgeognathus Amphigeisinidae Ancidontus Ancyrogondolella Apteracontiodus Belodellida Bengtsonella Branmehla Chengyuania Coleodontidae Costiconus Dasytodus Diaphanodus Dischidognathus Distacodidae Enantiognathus Euconodonta Euconodonta Euconodonta Fahraeosodus Falcodus Gagievodus Gobduntaulepis Heterdontoides Hindeodella andrusovi Iowagnathus Llandoverygnathus Lundodus Minimodus Nasusgnathus Noixodontus Omanognathus Oslodus Ozarkodinida Palmatodella Panderodontida Pandorinella Paraconodontida Parvigondolella Polygnathida Polyplacognathida Prioniodontida Protopanderodontida Pseudobelodella Rexroadus Rhynchognathodus Rotundoconus Sagittodontus Scandodus Silurognathus Spathognathodus Tardogondolella Trichonodella Youngquistognathus Zygognathus
Ecology: nektonic carnivore