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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)
Ceratitida
Paraceltitina
Xenodiscaceae
Pleuronodoceratidae

Pentagonoceras (23839332)

Children (6 direct children, 6 direct and indirect children):

Pentagonoceras costatum

Pentagonoceras attenuatum

Pentagonoceras chaotianense

Pentagonoceras guizhouense

Pentagonoceras guangyuanense

Pentagonoceras spinosum