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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
Phylloceratoidea (Phylloceraatida)
Phylloceratidae
Calliphylloceratinae

Holcophylloceras (21214947)

Children (9 direct children, 9 direct and indirect children):

Holcophylloceras avrami

Holcophylloceras zignodianum

Holcophylloceras costisparsum

Holcophylloceras kawhiae

Holcophylloceras mediterraneum

Holcophylloceras polyolcum

Holcophylloceras ponticuli

Holcophylloceras ultramontanum

Holcophylloceras caucasicum taiwanum