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Animalia
11
Biodiversity
Cephalopoda
Mollusca
Taxonomy
11
Tetrabranchia
7
Tarphycerida
6
Trocholitidae
6
Estonioceratidae
5
Trocholitoceras
5
Deltoceras
4
Litoceras
3
Cycloplectoceras
1
Cyclostomiceras
1
Cyclostomiceratidae
1
Protocycloceras
1
Protocycloceratidae
1
Tarphyceratidae
1
Trocholitoceras walcotti
1
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