Representation of acritarchs across the Permian-Triassic Boundary in India

Abstract

The paper deals with the review of published as well as new data on acritarchs from the Late Permian and Early Triassic sediments of peninsular India. Acritarch representation in terms of form diversity and quantitative acme phase is assessed. From the present state of knowledge the Acritarcha Group shows high form diversity during the latest Permian with high quantity in South Rewa and Rajmahal basins and Godavari Graben. During Early Triassic low to medium form diversity is observed in Damodar and South Rewa Gondwana basins. During the late Early Triassic high form diversity and high quantity is represented in Talcher Coalfield. The record of Micrhystridium, Cymatiosphaera and Veryhachium in the Late Permian and Muraticavea in Early Triassic sediments significantly points towards transgression of the sea during Late Permian and Late Early Triassic in India although no physical data is available.