Polished fossil stromatolite. Alcheringa narrina. ALC161 polished noreena From Wyloo Station in the

From Wyloo Station in the Pilbara region of Western Australia

70 mm x 45 mm  x 9

Weighs 235 grams

Dimensions at widest points approximately 260 mm x 170 mm x 8 mm thick

140 mm x 85 mm x 80 mm

Polished fossil stromatolite. Alcheringa narrina. ALC161 polished noreena From Wyloo Station in theALC160 Fossil stromatolite , polished on one side with natural weathered exterior on rear. Alcheringa narrina from the Archaean Meentheena Member within the Tumbiana Formation. Age is approx. 2. 7 billion years. From near Nullagine in Western Australia. Dimensions at widest points approx. 135 mm x 80 mm x 40 mm thick. Weighs 584 grams.