IRR112 Fossil stromatolite slab polished on one side.
A domal stromatolite from the Proterozoic "Irregully Formation" in Western Australia.
Yet to be formally identified but possibly Paniscollenia .
Age is approx. 1.1 billion years.
Dimensions approximately 100 mm x 90 mm x 8 mm thick
Weighs 136 grams
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