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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
Acanthoceratidae
Euomphaloceratinae

Romaniceras (18391001)

Children (11 direct children, 11 direct and indirect children):

Romaniceras mexicanum

Romaniceras toribioense

Romaniceras santaanaense

Romaniceras adkinsi

Romaniceras ornatissimum

Romaniceras kallesi

Romaniceras evolutum

Romaniceras deverioides

Romaniceras reymenti

Romaniceras deverianum

Romaniceras kanei