Cephalopoda - Ceratitida - Ptychitidae
Alternative combinations: Aristoptychites trochleaeformis, Nautilus trochleaeformis, Ptychites trocheaeformis
Belongs to Ptychites according to E. T. Tozer 1994
See also Bando 1964 and Weitschat and Lehmann 1983
Sister taxa: Ptychites besnosovi, Ptychites breunigi, Ptychites cognatus, Ptychites cultrata, Ptychites cylindroides, Ptychites densistriatus, Ptychites domatus, Ptychites dontianus, Ptychites durandii, Ptychites embreei, Ptychites eusomus, Ptychites evansi, Ptychites everesti, Ptychites evolvens, Ptychites gibbus, Ptychites globus, Ptychites gradinarui, Ptychites guloensis, Ptychites hamatus, Ptychites intermedius, Ptychites mahendra, Ptychites maximus, Ptychites miyagiensis, Ptychites nipponicus, Ptychites noricus, Ptychites oppeli, Ptychites opulentus, Ptychites posthumus, Ptychites progressus, Ptychites pseudoeuglyphus, Ptychites rectangulatus, Ptychites reductus, Ptychites rugifer, Ptychites sahadeva, Ptychites stachei, Ptychites stoliczkai, Ptychites sumitra, Ptychites tibetanus, Ptychites uhligi, Ptychites vidura, Ptychites wrighti
Ecology: nektonic carnivore
Average measurements (in mm): shell diameter 132.5
Distribution:
• Triassic of Canada (4: Alberta, British Columbia, Nunavut collections), Japan (1), Svalbard and Jan Mayen (5)
Total: 10 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.