Polished fossil stromatolite. Alcheringa narrina. ALC143 fossil stromatolite 70 million years (Cretaceous)

70 million years (Cretaceous)

Dimensions approximately 340 mm x 180 mm x 9

Desert Sunset is a banded iron formation that is comprised of alternating layers of red and yellow jasper and chert with narrow bands of black hematite

From an unassigned unit of the Wyloo Group

46 mm x 41 mm x 6 mm thick dome

Polished fossil stromatolite. Alcheringa narrina. ALC143 fossil stromatolite 70 million years (Cretaceous)ALC143. Fossil stromatolite polished slab. Alcheringa narrina from the Archaean Meentheena Member within the Tumbiana Formation. Age is approx. 2. 7 billion years. From near Nullagine in Western Australia. Approx. 95mm x 65mm x 9mm thick. Weighs 140grams.