Stromatolite Sample Set 2

Hindia sphaeroidalis; Cravat Member, Bois d'Arc Formation; Lower Devonian, Oklahoma

Ozarkcollenia latimarginata; Ketcherside Tuff, Precambrian; 1.5 Billion, Iron County, Missouri

Conophyton sp; Precambrian - 2 billion years old; Bolivia, South America

Actinostroma expansum; Shell Rock Limestone, U. Devonian; Nora Springs,Iowa

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