Olenus micurus Cambrian Olenid Trilobite

Half billion years old

Olenus micrurus

Trilobites Order Ptychopariida, Family Olenidae

Geological Time: Upper Cambrian, Merioneth Series, (about 500 million years ago)

Fossil Size: Trilobite is 20 mm long by 13 mm wide on a 50 mm by 70 mm matrix

Fossil Site: Fridd dol-y-moch, Transfynydd, North Wales, Great Britain

Code: UKF256

Price: $195.00

Olenus micurus Cambrian TrilobiteDescription: The dark mudstone matrix in which this member of the Ptychopariida is found gives away clues as to its lifestyle a HALF BILLION years ago. The wide pleurae are thought to have housed the gills by which the trilobite extracted oxygen from the seawater in its nearly anoxic environment. It may well have enjoyed a symbiotic relationship with sulfate reducing bacteria in much the same way as younger trilobites of the genus Triarthrus are thought to have done.

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Olenus micrurus

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