Polished fossil stromatolite. Pseudogymnosolenid type. DOG164 polished jasper 6 billion years

6 billion years

Dimensions at widest points approximately 70 mm x 35 mm x 30 mm thick

Dimensions approximately 180 mm x 70 mm x 7 mm thick

natural rough back and a polished face

Fossil stromatolite polished slab

Polished fossil stromatolite. Pseudogymnosolenid type. DOG164 polished jasper 6 billion yearsDOG164 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. 190 mm x 90 mm x 10 mm thick. Weighs