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†Arctica ? sycamorensis Perkins 1961

urn:lsid:organismnames.com:name:2657976

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†Arctica ? sycamorensis Perkins 1961

Perkins 1961. Biostratigraphic studies in the Co-manche (Cretaceous) Series of Northern Mexico and Texas. Memoirs geol Soc Amer No, 83 1961: 1-138