A peculiar and rare stromatolite <i>Platella</i> , from the Late Palaeoproterozoic Kajrahat Limestone, Vindhyan Supergroup, Son Valley, Sonbhadra, India

A rare stromatolite form, Platella , is documented for the first time from the Upper Kajrahat Limestone of the Semri Group, Vindhyan Supergroup, Son Valley, India. These are non-columnar stromatolites, characterised by vertically arranged, plate-like laminae. Occasionally, α-branching is observed, but it lacks colonial aggregation. Their distinct structure differentiates them from similar forms, such as Pitella and Parallelophyton . Sedimentary features and associated Fan Fabric Structures indicate a restricted intertidal depositional setting. This discovery contributes to the understanding of the biostratigraphic utility and diversity of the Vindhyan stromatolite, providing insights into the complex microbial-sedimentary interactions that occurred during the Proterozoic.