Polished fossil stromatolite slab. Strelley Pool Formation SPF139 mookatite Dimensions at widest points approximately

Dimensions at widest points approximately 175 mm x 100 mm x 80 mm thick

Dimensions at widest points approximately 90 mm x 70 mm x 60 mm thick

Dimensions at widest points approximately 120 mm  x 65 mm x 35 mm thick

NJ463  A rough rock

Dimensions at widest points approximately 130 mm x 85  x 25 mm thick

Polished fossil stromatolite slab. Strelley Pool Formation SPF139 mookatite Dimensions at widest points approximatelySPF139. Fossil stromatolite slab, 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 approx. 210 mm x 200 mm x 14. 5 mm thick. Weighs 1,073 grams.