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Animalia
20
Biodiversity
20
Cephalopoda
Mollusca
20
Tarphycerida
Taxonomy
20
Trocholitidae
20
Trocholitoceras
14
Litoceras
10
Deltoceras
4
Estonioceratidae
4
Tetrabranchia
4
Cycloplectoceras
2
Litoceras profilbekkenense
2
Tarphyceratidae
2
Trocholitoceras juvenicostatum
2
Trocholitoceras walcotti
2
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