Head: blue-green algae present; Division: Not classified; Common name: stromatolites; age: Precambrian - Cambrian; distribution: worldwide.
This is part of stromatolites, which have formed from limestone or cone to the cylinder of silicon have structure. Structure are laminated, sometimes, or light and dark stripe. Composed of fine filaments of algae can be seen under a microscope. The sand of the broken wire in the mud together the lime produced by algae in bed.
Origin: as with the existing collenia algae, algae are living in the sticky tropical tidal zones. |
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