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Animalia
Biodiversity
79
Cephalopoda
Mollusca
79
Taxonomy
79
Tetrabranchia
53
Rioceratidae
25
Orthocerida
21
Baltoceratidae
14
Phthanoncoceratidae
11
Tarphycerida
11
Trocholitidae
11
Cyptendoceratidae
10
Bactroceras
9
Estonioceratidae
9
Protocycloceratidae
9
Svalbardoceras
9
Troedssonellidae
8
Eosomichelinoceras
7
Svalbardocreas
7
Trocholitoceras
7
Bassleroceratidae
6
Buttsoceras
6
Deltoceras
6
Ellesmerocerida
6
Oncocerida
6
Cyptendoceras
5
Endocerida
5
Ethanoceras
5
Lawrenceoceras
5
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