Polished fossil stromatolite slab. Asperia ashburtonia. ASP153 dendrite Dimensions at widest points approximately

Dimensions at widest points approximately 300 mm x 180 mm x 9 mm thick

Weight 338 grams

150 mm x 90 mm x 15 mm thick

The interesting cylindrical cavity on the right hand side is all that remains of a fossil belemnite which was a squid-like creature with a tapering torpedo or bullet shaped body

Polished fossil stromatolite slab. Asperia ashburtonia. ASP153 dendrite Dimensions at widest points approximatelyASP153. Fossil stromatolite slab, polished on one side. Asperia ashburtonia from the Proterozoic "Duck Creek Dolomite". Age is approx. 2 billion years. From near Paraburdoo in Western Australia. Dimensions at widest points approx. 170 mm x 145 mm x 9 mm thick. It weighs 443 grams.