I didn't know Dinosaurs lived that far down in underground caves ( sarc-off ).
I am beginning to think the Russian PHD's and their abiotic oil Theories are not crazy...
Figure 6 line from above map.
Source: Chapter 15 Depositional Evolution of the Gulf of Mexico Sedimentary Basin
http://www.sciencedirect.com/science/article/pii/S1874599708000154