Polished fossil stromatolite. Strelley Pool Formation SPF129 dolomite Dimensions at widest points approximately

Dimensions at widest points approximately 110 mm x 40 mm x 30 mm thick

They usually occur as weathered out nodules formed by branched

SPF131   Fossil stromatolite

190 mm x 130 mm x 10mm thickness

cut and polished on one side with a natural back

Polished fossil stromatolite. Strelley Pool Formation SPF129 dolomite Dimensions at widest points approximatelySPF129 Fossil stromatolite . Rough rock with natural back, cut and polished on one side. Excellent display piece ! These are the oldest known fossils on Earth. From the Strelley Pool Formation in the Pilbara region of Western Australia. Age is approx. 3. 4 billion years. Dimensions at widest points approx. 270 mm x 100 mm x 70 mm thick. Weighs 1,956 grams.