🦖➡️💀➡️🐁

#K-Pg boundary #K-T boundary #dinosaur extinction #rise of mammals #faunal turnover #mass extinction #cretaceous period #paleogene period

🌍🔥➡️🐾🗺️

#mammal dispersal #faunal turnover #PETM consequences #land animal migration #biogeography #climate affects life