المصادر

https://en.wikipedia.org/wiki/Timeline_of_glaciation

https://www.youtube.com/watch?v=S9QJMpJ9tD0

https://en.wikipedia.org/wiki/Uranium%E2%80%93lead_dating

https://www.astronomy.com/science/asteroid-dust-found-at-chicxulub-crater-confirms-cause-of-dinosaurs-extinction/

https://en.wikipedia.org/wiki/Extinction_event

https://en.wikipedia.org/wiki/Echinerpeton

https://en.wikipedia.org/wiki/Dimetrodon

https://en.wikipedia.org/wiki/Procynosuchus

https://www.youtube.com/watch?v=ukJfEt0Jh6E

https://www.ck12.org/book/ck-12-human-biology/section/7.2/

https://en.wikipedia.org/wiki/Plesiadapiformes

https://en.wikipedia.org/wiki/Aegyptopithecus

https://www.youtube.com/watch?v=fZSE0BicoRs

https://en.wikipedia.org/wiki/Proconsul_(mammal)

https://natmus.humboldt.edu/exhibits/life-through-time/visual-timeline/neogene-period