What is the Evolutionary History of the Primates?. Cenozoic Timescale. What is the Evolutionary History of the Primates?. 1.EOCENE 54-38 mya Prosimian Radiations 2 exs: Smilodectes, Necrolemur 2.OLIGOCENE 38-23 mya Monkey Radiations 2 exs: Apidium, Aegyptopithecus
Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.
2 exs: Smilodectes, Necrolemur
2 exs: Apidium, Aegyptopithecus
3.MIOCENE 23-5 mya
2 exs: Sivapithecus, Gigantopithecus, Sahelanthropus
Late Cretaceous Primate-like Mammal Purgatorius
Last Common Ancestor:lived sometime in the late Cretaceous when dinosaurs still dominant land-dwelling life form[genetic evidence & diversity of primates from the Eocene and later]
If the last common ancestor of living primates did indeed live between 80 and 90 mya, the primate lineage that we are descended from would be pushed back more than 30 million years!
New Discoveries of Early Primates
New discoveries from Eocene of China reveal an unexpected diversity of early primates
Eocene Primates (Prosimian radiations)
1. Smilodectes (North America)
2. Necrolemur (Europe)
Very similar to the modern tarsier. Its features included: