Polished fossil stromatolite. Pseudogymnosolenid type. DOG165 polished rock 190 mm x 160 mm

190 mm x 160 mm x 9 mm thick

5 mm thick

quartz and chert

BA105  Polished Brazilian Agate slab

It weighs 208 grams

Polished fossil stromatolite. Pseudogymnosolenid type. DOG165 polished rock 190 mm x 160 mmDOG165 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. 285