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Biota (Life)
Eukaryote (Eukarya)
Podiata
Unikont (Unikonta)
Opisthokont (Opisthokonta)
Holozoa
Filozoa
Apoikozoa (Choanozoa)
Animal (Animalia)
Metazoa
Epitheliozoa
Eumetazoa
Bilateria
Nephrozoa (Eubilateria)
Protostome (Protostomia)
Spiralia (Spiralians)
Lophotrochozoa
Mollusca (Molluscs)
Cephalopod (Cephalopods)
Ammonoidea (Ammonoids)
Ammonitida
Ammonitina
Stephanocerataceae (Stephanoceratoidea)

Macrocephalitidae (16783252)

Children (12 direct children, 23 direct and indirect children):

Macrocephalites (tree size 6)

Xenocephalites (tree size 5)

Pleurocephalites

Indocephalites

Eucycloceras

Subkossmatia

Dolikephalites

Lycetticeras

Kamptokephalites

Idiocycloceras

Morrisiceras

Nothocephalites