Trilobite locomotion trail Isopodichnus sp., swimming grazing trace Monomorphichnus sp. and resting trace Rusophycusdidymus are recorded from the siltstone-shale-quartzarenite sequence of the Kunzam La Formation (Cambrian) from the eastern Lahaul Valley, Himachal Himalaya. Besides these, a ringed conical ichnocoenosis is also reported. The trilobite traces belong to Cruziana 'facies' which is characteristic of stable infra-littoral to circa-littoral zones. The presence of Rusophycus suggests a rather low energy environment.
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Bhargava et al. (1985) studied this question.
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