Page "Primate" Paragraph 1

With the exception of humans, who inhabit every continent, most primates live in tropical or subtropical regions of the Americas, Africa and Asia.

They range in size from Madame Berthe's mouse lemur, which weighs only, to the eastern lowland gorilla, weighing over.

According to fossil evidence, the primitive ancestors of primates may have existed in the late Cretaceous period around 65 million years ago ; the oldest known primate is the Late Paleocene Plesiadapis, circa 55 – 58 million years ago .< ref name = ChatterjeeEtal2009 >