![]() Early apes, such as Proconsul africanus, like the apes of today, lacked tails but still had monkey-like wrists and were unable to swing from branches in the manner of modern apes. The first apes are thought to have appeared around 25 mya in Africa, after having branched off from the old world monkeys. Simians – the group of primates to which all monkeys and apes belong – first appeared at some point between 60 and 40 mya.Ģ5 mya: The Ape Lineage Separates From The Other Simians They were the ancestors of today’s tarsiers, monkeys and apes – including humans. Early haplorhines were small, arboreal (tree-dwelling) animals that resembled tarsiers. Shortly (geologically speaking) after the Cretaceous–Paleogene extinction event, a group of primates known as Haplorhini appeared. ![]() Many mammalian groups – including the early primates – underwent rapid changes as they evolved to fill in the niches left empty by the disappearance of the dinosaurs. Click to discover more about this stage in the human evolution timelineĦ6 mya: The Age Of Reptiles Comes To An End Primates Continue To EvolveĪfter the Cretaceous–Paleogene extinction event which marked both the end of the Mesozoic Era and the extinction of the non-avian dinosaurs, mammals became the dominant land vertebrates.These early primates were likely small, nocturnal, tree-dwelling animals. The very first primates are thought to have appeared during the late Cretaceous Period while dinosaurs were still alive. (Alternatively, scroll past the timeline to see details on every stage in order.) 85 mya: The First Primates Appear You can click on the links (or on the colorful title banners) in the timeline below to find out more about a particular stage. ![]()
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