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Polyptychoceras subquadratum

Polyptychoceras (Polyptychoceras) subquadratum (Yokoyama)

• Extinct species
• Habitat: Marine

• Classification
• kingdom Animalia, phylum Mollusca, class Cephalopoda, subclass Ammonoidea, order Ammonitida, family Diplomoceratidae, genus Polyptychoceras

• Distribution
• Cretaceous: Hokkaido