Polished fossil stromatolite slab. Alcheringa narrina. ALC158 fossil stromatolite Dimensions at widest points approximately

Dimensions at widest points approximately 110 mm x 90 mm x 55 mm thick

Dimensions approximately 120 mm x 65 mm x 8 mm thick

MC117 Marillana Conglomerate rough rock

Dimensions at widest points are approximately 85 mm x 70 mm x 50 mm

Polished fossil stromatolite slab. Alcheringa narrina. ALC158 fossil stromatolite Dimensions at widest points approximatelyALC158 Fossil stromatolite slab, polished on one side. 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. 160 mm x 90 mm x 17 mm thick. Weighs 493 grams.