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†Zifondium Pessagno 1977

urn:lsid:organismnames.com:name:2061896

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†Zifondium Pessagno 1977

Pessagno 1977. Lower Cretaceous radiolarian biostratigraphy of the Great Valley sequence and Franciscan comples, California coast range. Special Publs Cushman Fdn, No. 15 1977: 1-87,illust.