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Nassarius sp., Nassa mud snail(s), Dog whelk(s)

genus Nassarius Duméril, 1805

Invalid synonym: Niotha sp.

• Modern species: Paleocene - Present (61.7 - 0.0 Ma)
• Habitat: Marine

• Classification
• kingdom Animalia, phylum Mollusca, class Gastropoda, order Neogastropoda, family Nassariidae

• Distribution
• Miocene: Akita, Fukushima, Ishikawa, Gifu, Hiroshima, Tottori, Yamaguchi, Kagawa
• Pliocene-Pleistocene: Kanagawa
• Quaternary: Hiroshima
• Pleistocene: Niigata, Toyama, Ishikawa, Fukui, Ibaraki, Saitama, Tokyo, Chiba, Kanagawa, Shizuoka, Aichi, Mie, Oita
• Holocene: Aichi

• Subtaxa
• N. bellulus
• N. caelatus
• N. castus
• N. conoidalis, Cone-shaped nassa
• N. fuscolineatus
• N. fuscolineatus
• N. livescens
• N. praematuratus
• N. simizui
• N. siquijorensis, Burned nassa