Fossil stromatolite slab polished on one side.
An as yet unidentified stromatolite form of Pseudogymnosolenid type.
The stromatolite occurs as small digitate columns which are finely laminated. It probably grew in shallow water conditions with intermittent subaerial exposure.
Age is approx. 1.7 billion years.
From South West of Newman Western Australia.
Approx. 115mm x 50mm x 9 mm thick.
Weighs 152 grams.
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