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Actinocyclus ingens

Actinocyclus ingens Rattray, 1890

• Modern species
• Habitat: Marine

• Classification
• kingdom Chromista, phylum Ochrophyta, class Bacillariophyceae, order Coscinodiscales, family Hemidescaceae, genus Actinocyclus

• Distribution
• Miocene: Iwate, Tochigi
• Quaternary: Chiba