11. Fossilized porbeagle remains are known from Late Miocene epoch ( 50 34 Ma ). 12. The beach deposits were formed principally during the Miocene Epoch , about 20 million years ago. 13. The "'Topanga Canyon Formation "'is a Miocene epoch Ventura County, and Orange County, southern California. 14. During the Miocene epoch of the ensuing Neogene period west-central Louisiana held a coastal plain. 15. This would place the event in the Miocene epoch . 16. The geologic area around Jericho contains Miocene epoch marl, and it is rich with fossils. 17. The Claremont Shale formation preserves fossils dating back to the Miocene epoch of the Neogene period. 18. The remains showed that Hollywood was at least a half-mile underwater in the late Miocene epoch . 19. The stones formed as the seabed rose rapidly out of the ocean during the Miocene epoch . 20. Volcanic Explosivity Index ( VEI ) values for events in the Miocene epoch sometimes lack references.
