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Animalia
78
Biodiversity
Cephalopoda
Mollusca
78
Taxonomy
78
Tetrabranchia
52
Rioceratidae
24
Orthocerida
20
Baltoceratidae
13
Phthanoncoceratidae
10
Tarphycerida
10
Trocholitidae
10
Bactroceras
9
Cyptendoceratidae
9
Svalbardoceras
9
Estonioceratidae
8
Protocycloceratidae
8
Eosomichelinoceras
7
Svalbardocreas
7
Trocholitoceras
7
Troedssonellidae
7
Buttsoceras
6
Deltoceras
6
Bassleroceratidae
5
Cyptendoceras
5
Ellesmerocerida
5
Ethanoceras
5
Lawrenceoceras
5
Litoceras
5
Nyfrieslandoceras
5
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