Revisiting Paleogene Through the Migration Pattern of Bivalvia

Explore the fascinating migration patterns of bivalves during the Paleogene period in this guest lecture by Dr. Aniket Mitra. Delve into how major geological events, including the Himalayan and Alpine orogenesis, closure of the Tethys Sea, global warming, sea level fluctuations, Antarctic glaciation, and global cooling, influenced the dispersal of bivalve larvae. Examine the palaeobiogeographic distribution of marine bivalves to understand the impact of these events on their migration. Learn about the influx of new bivalve genera in the northern hemisphere's temperate and equatorial zones during the early Paleogene hyperthermal, and their subsequent migration to higher latitudes as temperatures increased. Discover how the northern equatorial current facilitated generic similarity from east to west of Tethys, and how this was affected by tectonic events. Investigate the adverse effects of global cooling in the late Paleogene on bivalve communities, including reverse migration patterns and reduced generic diversity. Gain insights from Dr. Mitra's research on the effects of Eocene global events on marine bivalves from the Kutch and Cambay basins of Gujarat, India.