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Thylacodes sp.

genus Thylacodes Guettard, 1770

Invalid synonym: Serpulorbis sp.

• Modern species: Late Pleistocene - Present (0.12 - 0.0 Ma)
• Habitat: Marine

• Classification
• kingdom Animalia, phylum Mollusca, class Gastropoda, order Littorinimorpha, family Vermetidae

• Distribution
• Miocene-Pliocene: Fukushima
• Pliocene: Niigata
• Pleistocene: Chiba, Kanagawa, Aichi
• Holocene: Ishikawa, Chiba
• Investigation in progress: Nagano

• Subtaxa
• T. adamsii, Imbricated worm shell