List of vertebrate fauna of the Maastrichtian stage
This is an incomplete list that briefly describes vertebrates that were extant during the Maastrichtian, a stage of the Late Cretaceous Period which extended from 72.1 to 66 million years before present. This was the last time period in which non-avian dinosaurs, pterosaurs, plesiosaurs, and mosasaurs existed.
Source: Wikipedia — List of vertebrate fauna of the Maastrichtian stage (CC BY-SA 4.0)