Full reference: J. K. Zhao. 1954. Permian cephalopods from Tanchiashan, Hunan. Acta Palaeontologica Sinica 2:1-58
Parent taxon: Orthocerida according to C. Teichert et al. 1964
Sister taxa: Acrosphaerorthoceras, Aethiosolen, Arionoceratidae, Arterioceras, Badouceras, Baltoceratidae, Bogoslovskya, Bohemites, Cedarvilleoceras, Chicagooceras, Coralloceras, Cornuella, Cryptocycloceras, Cycloceras, Dawsonoceratidae, Dictyoceras, Donacoceras, Eriditidae, Esopoceras, Folioceras, Garryoceras, Geisonoceratidae, Geisonocerina, Greenlandoceras, Haruspex, Heloceras, Jangziceras, Joldagiroceras, Kionoceratidae, Leurocycloceras, Loxoceras, Mericoceras, Molossus, Mongoceras, Murchisoniceras, Naivs, Narthecoceratidae, Nebroceras, Neorthoceras, Neosichuanoceras, Ophidioceras, Orthoceratidae, Palaeocycloceras, Paradnatoceras, Paramooreoceras, Plicatoceras, Podoliceras, Proteoceratidae, Protobactrites, Pseudokionoceras, Pseudorthocerataceae, Pseudotemperoceras, Pythonoceras, Rhabdites, Rhipsites, Richmondoceras, Sactoceras, Sannionites, Siberioceras, Sichuanaceras, Sichuanoceratidae, Sphaerorthoceratidae, Sphaerortoceratidae, Standardoceras, Subspyroceras, Tambegiroceras, Tartaroceras, Tretoceras, Trispectes, Tunguskoceras, Vericeras, Zeehanoceras, Zhuralevia, Clinoceratidae, Choanoceratidae, Greenlandoceratidae, Michelinoceratidae, Allumettoceratidae, Cycloceratidae, Eskimoceratidae, Striatoceratidae, Engorthoceratidae
Subtaxa: Tienoceras lenticulare
Type: Tienoceras lenticulare
Ecology: nektonic carnivore