Polished fossil stromatolite. Pseudogymnosolenid type. DOG163 outback jasper Dimensions approximately 170mm x 45mm

Dimensions approximately 170mm x 45mm x 15-45mm thick

This specimen is from east of the Darling Ranges just outside the city of Perth

100 mm x 90 mm x 30 mm thick

Chert Breccia slab

Polished fossil stromatolite. Pseudogymnosolenid type. DOG163 outback jasper Dimensions approximately 170mm x 45mmDOG163 Fossil stromatolite slab, polished on one side 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. 145 mm x 65 mm x 7 mm thick. Weighs