Polished fossil stromatolite slab. Asperia digitata YD110 atlantisite Dimensions at widest points approximately

Dimensions at widest points approximately 160 mm x 65 mm x 30 mm thick

Fossil stromatolite

190 mm x 95 mm x 70 mm thick

Sections consist of a chaotic mixture of dolomite and/or stromatolite fragments set in a matrix of mudstone and/or coarsely crystalline dolomite

Weighs 230 grams

Polished fossil stromatolite slab. Asperia digitata YD110 atlantisite Dimensions at widest points approximatelyYD110. Fossil stromatolite slab polished on one side. Asperia digitata (formerly Yelma digitata) from the Proterozoic "Yelma Formation". Age is approx. 1. 7 billion years. From near Wiluna in Western Australia. Dimensions approx. 130 mm x 90 mm x 5 mm thick. Weighs 142 grams.