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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
Spiroceratoidea

Spyroceratidae (7581790)

Children (7 direct children, 13 direct and indirect children):

Dolorthoceras

Adnatoceras

Parastrenoceras (tree size 4)

Sceptrites

Spyroceras

Tripteroceroides

Spiroceras (tree size 2)