†Geczyceras speciosum Janensch 1902
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Cephalopoda - Ammonitida - Hammatoceratidae
Alternative combination: Hammatoceras speciosum
Belongs to Geczyceras according to Z. Kovács 2009
See also Géczy and Szente 2006
Sister taxa: Geczyceras allobrogense, Geczyceras bonarellii, Geczyceras clausum, Geczyceras costatum, Geczyceras costulosum, Geczyceras galaczi, Geczyceras martinezae, Geczyceras perplanum, Geczyceras porcarellense
Average measurements (in mm): diameter 111.3
Distribution:
• Jurassic of Bulgaria (1 collection), Canada (4: British Columbia), France (5), Hungary (13), Spain (6)
Total: 29 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
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