Ptychites trochleaeformis Lindstroem 1865

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 cognatus, Ptychites cylindroides, Ptychites densistriatus, Ptychites domatus, Ptychites dontianus, Ptychites durandii, Ptychites eusomus, Ptychites evansi, Ptychites everesti, 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 pseudoeuglyphus, Ptychites rugifer, Ptychites sahadeva, Ptychites stachei, Ptychites sumitra, Ptychites suttneri, Ptychites tibetanus, Ptychites vidura, Ptychites wrighti

Average measurements (in mm): shell diameter 132.5

Distribution:

• Triassic of Canada (4: Alberta, British Columbia, Nunavut collections), Japan (1), Svalbard and Jan Mayen (2)

Total: 7 collections each including a single occurrence

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Specimen images are retrieved through the ePANDDA API.


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