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85 mm x 90 mm x 30 - 35 mm thick
Dimensions at widest points approximately 185 mm x 160 mm x 8 mm thick
100 mm x 65 mm x 18 mm thick
Weighs 476 grams
115 mm x 90 mm x 40 mm thick
Polished fossil stromatolite. Pseudogymnosolenid type. DOG168 ashburton agate 85 mm x 90 mmDOG168 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
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