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Polychaeta, Polychaete(s), Ragworm(s)

class Polychaeta Grube, 1850

Synonym of ichnogenuses, Rosselia isp. or Macaronichnus isp.. Rosselia isp. is interpreted as dwelling traces of Terebellidae, and Macaronichnus isp. as waste traces of ragworms.

• Modern species
• Habitat: Marine

• Classification
• kingdom Animalia, phylum Annelida

• Distribution (Tubes)
• Miocene: Tochigi
• Pliocene: Aomori
• Pleistocene: Hokkaido

• Distribution (Rosselia isp.)
• Miocene: Yamagata, Saitama
• Miocene-Pliocene: Yamagata
• Pleistocene: Aomori, Kanagawa

• Subtaxa
• Serpulidae, family
• Terebellidae, family