Introduction

The Spiti Basin in Himachal Pradesh is a key region for studying Palaeozoic stratigraphy, showcasing a well-preserved sequence from the Cambrian to Permian periods. Notable contributions by geologists like Hayden and Pascoe have highlighted its rich fossil content and distinct lithological units. The basin's stratigraphy reveals significant insights into the Tethyan sedimentation and paleoenvironments, making it crucial for understanding the geological history of the Himalayan orogeny.

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