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

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

Dimensions approximately 120 mm x 65 mm x 8 mm thick

OJ196  A slab

MC117 Marillana Conglomerate rough rock

Dimensions at widest points approximately 145 mm x 105 mm and 60 mm thick

Polished fossil stromatolite slab. Alcheringa narrina. ALC158 fossil stromatolite Dimensions at widest points areALC158 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.