Nit, dinosaurs did not rule the earth for 180MYA, they did for about 135 MYA from the Tr-J extinction event (which wiped out most of the old archosaurs) around

Nit, dinosaurs did not rule the earth for 180MYA, they did for about 135 MYA from the Tr-J extinction event (which wiped out most of the old archosaurs) around 200MYA to the K-Pg extinction event around 65MYA. Maybe a bit more if you count the early Paleogene for avian dinosaurs on account of Gastornis.