Polished fossil stromatolite. Strelley Pool Formation SPF131 stitchtite in serpentine Dimensions at widest points approximately

Dimensions at widest points approximately 95 mm x 40 mm x 20 mm thick

6 billion years

Yet to be formally identified but possibly Paniscollenia

240 mm high  x 120 mm x 13 mm thick

Polished fossil stromatolite. Strelley Pool Formation SPF131 stitchtite in serpentine Dimensions at widest points approximatelySPF131 Fossil stromatolite . Rough rock with natural back, cut and polished on one side. 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. 155 mm x 70 mm x 30 mm thick. Weighs 648 grams.