Trace Fossils from the Palaeozoic-Mesozoic Sequence of Spiti-Kinnaur (Himachal Himalaya) With Comments on Palaeoenvironmental Control on their Frequency

Abstract

Bifasciculus and Phycodes pedum from the Cambrian Kunzam La Formation; Arthrophycus from the Silurian Takche Formation; arthropod markings and Paleophycus tubularis from the Devonian Muth Formation; Rusophycus and Skolithos from the Po Formation: Laevicyclus and Skolithos from Permian Kuling Formation; Gordia, Paleophycus A. Rhizocorallium, Skolithos and cephalopod wheeling traces from the Triassic-Liassic Lilang Group and Paieophyclis tubularis from the Jurassic Spiti Formation are recorded.

A checklist of trace fossils of the Western Higher Himalaya shows a paleoenvironmental control on trace fossil frequency. Comments on earlier described Taphrhelminthopsis circularis and Isopodiehnus are also furnished.