Cephalopoda - Ceratitida - Ceratitidae
Alternative combination: Gymnotoceras varium
Synonyms: Anagymnotoceras helle McLearn 1948, Gymnotoceras helle McLearn 1948
Belongs to Anagymnotoceras according to E. T. Tozer 1994
See also Konstantinov 1991 and McLearn 1969
Sister taxa: Anagymnotoceras columbianum, Anagymnotoceras dulanense, Anagymnotoceras favretense, Anagymnotoceras ino, Anagymnotoceras spivaki, Anagymnotoceras tozeri, Anagymnotoceras variabilis, Anagymnotoceras wrighti
Type specimens:
- Anagymnotoceras varium: GSC 9595. Its type locality is GSC 10696, Alaska Highway, which is in a Bithynian marine siliciclastic in the Toad Formation of Canada.
- Gymnotoceras helle: GSC 9593. Its type locality is GSC 10697, Cameron Hill, which is in a Bithynian marine siliciclastic in the Toad Formation of Canada.
Average measurements (in mm): shell diameter 41.2
Distribution:
• Triassic of Canada (8: British Columbia collections), the Russian Federation (1), Svalbard and Jan Mayen (2)
Total: 11 collections including 12 occurrences
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.