†Riccardiceras longalvum Vacek 1886
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Cephalopoda - Ammonitida - Stephanoceratidae
Alternative combinations: Coeloceras longalvum, Docidoceras (Docidoceras) longalvum, Docidoceras longalvum
Belongs to Riccardiceras according to V. Dietze et al. 2017
See also Sandoval et al. 2000 and Westermann 1969
Sister taxa: Riccardiceras limatum, Riccardiceras perfectum, Riccardiceras telegdirothi
Average measurements (in mm): shell diameter 140.0
Distribution:
• Jurassic of Canada (2: Yukon collections), Italy (5), Thailand (1), United States (1: Alaska)
Total: 9 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
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