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C. S. Sudan ¹, U. K. Sharma ¹, A. K. Sahni ¹, S. K. Shah ¹

Affiliations
1 Department of Geology, University of Jammu, Jammu-180 006, IN

Abstract

The Early Cambrian trace fossils Planolites, Skulithos, Psammichnites, Neonereites, Didymaulichnus, Monurnorphichnus, Dirnorphichnus, Diplichnites, Rusophycus and Cruzianu are described from the Kunzum La Formation (Haimanta Group) of the Pin section in Spiti valley. These trace fossils occur well below the body fossil zone reflecting their abundance at two stratigraphic levels. The Precambrian-Cambrian boundary could be well betow the earliest trace fossil horizon. The abundance of trace fossils at these two levels is a universd phenomenon in the Himalaya and indicates two acme zones with proliferation of vermiform organisms in the lower zone and arthropod forms in the upper zone.

Keywords

Palaeontology, Trace Fossils, Early Cambrian, Kunzum La Formation, Pin Section, Spiti Valley, Himachal Pradesh.

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A. K. Sahni ¹, C. S. Sudan ¹

Affiliations
1 P.G. Department of Geology, University of Jammu, Jammu - 180 004, IN

Abstract

An agnostid fauna from the Middle Cambrian (Peronopsis-Oryctocephalus zone) of Parahio valley, Spiti is described. It includes Peronopsis amplaxis. Peronopsis sp., Pagetia griesbachi and Pagetia sp. This assemblage is correlated with S olenopleura-Tonkinella zone of Kashmir and also with Ptychagnostus gibbus zone of Australia and North America.

Keywords

Palaeontology, Agnostide, Middle Cambrian, Spiti, Himalaya.

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