Late Maastrichtian pterosaurs from North Africa and mass extinction of Pterosauria at the Cretaceous-Paleogene boundary
Fig 1
A) Map showing the location of the phosphate mines in Morocco, (B) map showing Sidi Daoui and Sidi Chennane mines, and (C) stratigraphic column for the phosphates of the Sidi Daoui area (after [40]).
Abbreviations: PETM, Paleocene-Eocene Thermal Maximum.