A comprehensive review of the lithology, megafloras and palynology of the Dubrajpur Formation of the Rajmahal Basin, eastern India indicates that this important unit comprises strata of Early and Late Triassic, late Early to early Mid Jurassic and latest Jurassic to Early Cretaceous age. The age range of the Dubrajpur Formation is concluded to be Early Triassic (Induan) to Early Cretaceous (Berriasian–Hauterivian) based on palynological evidence. It is hence a profoundly diachronous succession.

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