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Umbonium giganteum

Umbonium giganteum (Lesson, 1831)

This species is considered as an ancestor of Umbonium suchiense and Umbonium subsuchiense.

• Modern species
• Habitat: Marine

• Classification
• kingdom Animalia, phylum Mollusca, class Gastropoda, family Trochidae, genus Umbonium

• Distribution
• Pliocene: Shizuoka
• Pleistocene: Chiba, Kanagawa, Shizuoka