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Oncolite Stromatolite Girvanella
Oncolite Stromatolite Girvanella
Oncolite Stromatolite Girvanella

Oncolite Stromatolite Girvanella

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Hagars Fossil and Minerals
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$45.00
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Stromatolite

Girvanella sp
Algal Oncolites
Cambrian
Chambless Limestone
Marble Mountains, California

Oncolites are a very similar species to stromatolites.  They form spherical structures instead of forming columns. They would form around a center point, such as a shell fragment.

4 1/8 inch x 3.5 

Gehard G.H. Muehle collection