Polished fossil stromatolite. Pseudogymnosolenid type. DOG168 ashburton agate Dimensions at widest points approximately

Dimensions at widest points approximately 185 mm  x 160 mm x 8 mm thick

100 mm x 65 mm x 18 mm thick

Dimensions approximately 110 mm x 90 mm x 80 mm thick

Dimensions at widest points approximately 85 mm x 50 mm x 20 mm thick

Dimensions approximately 170mm x 110mm x 11mm thick

Polished fossil stromatolite. Pseudogymnosolenid type. DOG168 ashburton agate Dimensions at widest points approximatelyDOG168 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. 85 mm x 85 mm x 10 mm thick. Weighs