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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
Hildoceratoidea (Hildocerataceae)

Hildoceratidae (5761709)

Children (18 direct children, 421 direct and indirect children):

Asthenoceras (tree size 1)

Hildoceras (tree size 22)

Frechiella (tree size 10)

Fuciniceras (tree size 28)

Yakounia

Harpoceratinae (tree size 94)

Paroniceratinae (tree size 5)

Grammoceratinae (tree size 93)

Dumortieriinae

Monestierinae

Protogrammoceratinae (tree size 41)

Polyplectinae

Mercaticeratinae

Hildoceratinae (tree size 51)

Arieticeratinae (tree size 31)

Bouleiceratinae (tree size 19)

Leukadiellinae (tree size 5)

Tmetoceratinae (tree size 3)