The Rupsi and Lanella Members of the Formation contain profuse ammonites and can be dated as Early kimmeridgian to Late Kimmeridgian in age.
2.
The Baisakhi Formation in general, comprises shale, sandstone, siltstone and ironstone and is subdivided into Rupsi, Lodorva and lanella members in ascending order by Prasad ( 2006 ).
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