Genus
Ephippiorthoceras Foerste, 1924
Aiheeseen liittyvät julkaisut
Strand, T. 1934. The Upper Ordovician Cephalopods of the Oslo Area. Norsk Geologisk Tidsskrift 14, 1-117.
List of species
1. Ephippiorthoceras frognoyense Strand, 1934 | Upper Ordovician
2. Ephippiorthoceras plicatuloides Strand, 1934 | Ordovician
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Luokittelu
| Organism group | Biota |
| Kingdom | Animalia |
| Phylum | Mollusca |
| Class | Cephalopoda |
| Subclass | Orthoceratia |
| Order | Orthocerida |
| Suborder | Orthoceratina |
| Family | Proteoceratidae |
| Genus | Clothoceras |
| Ephippiorthoceras | |
| Species | frognoyense |
| plicatuloides | |
| Genus | Gorbyoceras |
| Isorthoceras | |
| Transorthoceras |
See also