Order
Thecideida Elliott, 1958
Klassificering
Organism group | Biota |
Kingdom | Animalia |
Phylum | Brachiopoda |
Subphylum | Rhynchonelliformea |
Class | Rhynchonellata |
Order | Athyridida |
Atrypida | |
Orthida | |
Pentamerida | |
Protorthida | |
Rhynchonellida | |
Spiriferida | |
Spiriferinida | |
Terebratulida | |
Thecideida |