http://onlinelibrary.wiley.com/doi/10.1029/2008PA001615/full http://onlinelibrary.wiley.com/doi/10.1029/2008PA001615/full Feel free to do your own research, ob

http://onlinelibrary.wiley.com/doi/10.1029/2008PA001615/full http://onlinelibrary.wiley.com/doi/10.1029/2008PA001615/full Feel free to do your own research, obviously. You are looking for eustatic sea level during PETM (Paleo-Eocene Thermal Maximum). You will likely find a lot of studies which show coral reefs and anything that lives in the ocean and has a shell is about to have an even worse time of it than we are! (To be clear, hundreds is the most extreme value -- the variability at different sites is fairly high, but roughly 50m is the minimum.)