A new record of trace fossil polychaete (annelid) from the Cambrian of the Salt Range, Punjab, Pakistan
Abstract
Field investigations on the paleo-biology of a hard dolomitic limestone to sandy, clayey dolomite locally known as Jutana Dolomite of Cambrian age, exposed in Khewra Gorge, Khewra, District Jhelum, eastern Salt Range, have produced fossil brachiopods, trilobites and trace fossils consisting of trails and burrows of annelids and trilobites. The formation is highly bioturbated in its upper part. A comparatively complete polychaete trace fossil from the dolomite is U-shaped, 70 cm. Long, with 28 segments of average length of 25 cm. Minerals (chlorite, mica, etc.) around the polychaetes are noticeably radioactive; it is likely that the radioactive material was preferentially collected by the organisms.
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