Thin spot in the textbook about this section! Evolutionary events in geologic time: fossil evidience of nonhuman primates assoc. with deposits from. Tertiary period which began 65 mya: reconstructions of primate phylogeny evolutionary history based on genetic data suggest that primates may have existed 80-90 mya. Plate tectonics and continental drift: the supercontinent pangea divided into northern and southern sections known as laurasia and gondwanaland respectively. Origin, fosil record and evolutionary history: reconstruction of paleocene epoch early primate plesiadapis. Were referred to as like-primates but in 2005-06 new fossils are now understood to be the likeliest anscestors of the extant members of the order primates. Diversity of opinion in this group they have claws, for example. Their skull as well, and their skulls more like rodents. Ankles, wrists, structure of skulls similar to primates. Linnaeus: had no knowledge of fossil primate species none had been discovered.