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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
Hammatoceratoidea
Hammatoceratidae

Hammatoceratinae (21292413)

Children (19 direct children, 76 direct and indirect children):

Euaptetoceras (tree size 1)

Hammatoceras (tree size 17)

Bredyia (tree size 3)

Eudmetoceras (tree size 3)

Planammatoceras (tree size 9)

Pseudammatoceras

Puchenquia (tree size 3)

Chartronia

Geczyceras (tree size 9)

Accardia (tree size 3)

Pachammatoceras

Crestaites (tree size 5)

Pseudaptetoceras (tree size 2)

Rhodaniceras

Ceccaites

Csernyeiceras (tree size 1)

Erycitoides (tree size 1)

Kialagvikes

Paviaites