Polished fossil stromatolite slab. Domal from Irregully formation IRR120

IRR120  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 170 mm x 65 mm x 9 mm thick

Weighs 236 grams