Polished fossil stromatolite slab. Strelley Pool Formation SPF145 purple Dimensions approximately 160 mm x

Dimensions approximately 160 mm x 45 mm x 7 mm thick

Dimensions at widest points approximately 150 mm x 90 mm x 7 mm thick

Dimensions at widest points approximately 150 mm x 90 mm x 45 mm thick

Weighs 233 grams

Dimensions at widest points approximately 165 mm x 120 mm x 11 mm  thick

Polished fossil stromatolite slab. Strelley Pool Formation SPF145 purple Dimensions approximately 160 mm xSPF145. 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. 250 mm x 140 mm x 12. 5 mm thick. Weighs 693 grams.