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Animalia
4
Biodiversity
4
Cephalopoda
Estonioceratidae
Mollusca
4
Phthanoncoceratidae
4
Rioceratidae
Taxonomy
4
Tetrabranchia
4
Nyfrieslandoceras
3
Bactroceratidae
1
Baltoceratidae
1
Bassleroceratidae
1
Cyclostomiceratidae
1
Cyptendoceratidae
1
Dissidocerida
1
Ellesmeroceratidae
1
Ellesmerocerida
1
Endocerida
1
Oncocerida
1
Orthocerida
1
Proterocameroceratidae
1
Protocycloceratidae
1
Riocerida
1
Tarphyceratidae
1
Tarphycerida
1
Trocholitidae
1
Troedssonellidae
1
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