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Siphonalia declivis

Siphonalia declivis Yokoyama, 1926

• Extincct species
• Habitat: Marine

• Classification
• kingdom Animalia, phylum Mollusca, class Gastropoda, class Neogastropoda, family Buccinidae, genus Siphonalia

• Distribution
• Pliocene: Shizuoka
• Pleistocene: Shizuoka

• Subtaxa
• S. d. biconica