Polished fossil stromatolite . Carnegia wongawolensis CAR102. stromatolite It weighs 10

It weighs 10

110 mm x 40 mm x 7 mm thick

60 mm x 35 mm  x 30 mm

7 billion years

4 billion years

Polished fossil stromatolite . Carnegia wongawolensis CAR102. stromatolite It weighs 10CAR102. Fossil stromatolite slab, polished on one side. Carnegia wongawolensis. These rare stromatolites are from the Windidda Formation, Earaheedy Group, Western Australia. They usually occur as weathered out nodules formed by branched, irregular columns. The environment they grew in was possibly freshwater algal marshes. Location is near the town of Wiluna, Western Australia. Age is Palaeoproterozoic (1. 6 to 2. 5 billion years). Approx. 210 mm x 70