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Anaspyroceras
Taxonomy
Anaspyroceras was named by Shimizu and Obata (1935) [Sepkoski's age data: O Llde D Sieg-u Sepkoski's reference number: 298,524]. It is not extant.
It was assigned to Orthoceratidae by Crick (1981), Evans (1994); and to Dawsonoceratidae by Kröger and Isakar (2006), Kröger (2008).
It was assigned to Orthoceratidae by Crick (1981), Evans (1994); and to Dawsonoceratidae by Kröger and Isakar (2006), Kröger (2008).
Species
Species lacking formal opinion data