Polished fossil stromatolite. Pseudogymnosolenid type. DOG166 oldest agate in the world Location is near the town

Location is near the town of Wiluna

with great weathered rough side

The environment they grew in was possibly freshwater algal marshes

Dimensions approximately 185mm x 130mm x approx  9mm thick

Dimensions at widest points approximately 160 mm x 65 mm x 30 mm thick

Polished fossil stromatolite. Pseudogymnosolenid type. DOG166 oldest agate in the world Location is near the townDOG166 Fossil stromatolite slab, polished on one side. Superb museum quality specimen ! An as yet unidentified stromatolite, form of Pseudogymnosolenid type. The stromatolite occurs as small digitate columns which are finely laminated. It probably grew in shallow water conditions with intermittent subaerial exposure. From an unassigned unit of the Wyloo Group. Age is approx. 1. 8 billion years. From south west of Newman Western Australia. Approx. 280