By modern cladistic reckoning, the order Primates is monophyletic. The suborder Strepsirrhini, the "wet-nosed" primates, is generally thought to have split off from the primitive primate line about 63 mya, although earlier dates are also supported. The seven strepsirrhine families are the five related lemur families and the two remaining families that include the lorisids and the galagos. Older classification schemes wrap Lepilemuridae into Lemuridae and Galagidae into Lorisidae, yielding a four-one family distribution instead of five-two as presented here. During the Eocene, most of the northern continents were dominated by two groups, the adapiforms and the omomyids. The former are considered members of Strepsirrhini, but did not have a toothcomb like modern lemurs; recent analysis has demonstrated that Darwinius masillae fits into this grouping. The latter was closely related to tarsiers, monkeys, and apes. How these two groups relate to extant primates is unclear. Omomyids perished about 30 mya, while adapiforms survived until about 10 mya.
by modern cladistic reckoning the order primates is monophyletic the suborder strepsirrhini the "wet-nosed" primates is generally thought to have split off from the primitive primate line about 63 mya although earlier dates are also supported the seven strepsirrhine families are the five related lemur families and the two remaining families that include the lorisids and the galagos older classification schemes wrap lepilemuridae into lemuridae and galagidae into lorisidae yielding a four-one family distribution instead of five-two as presented here during the eocene most of the northern continents were dominated by two groups the adapiforms and the omomyids the former are considered members of strepsirrhini but did not have a toothcomb like modern lemurs; recent analysis has demonstrated that darwinius masillae fits into this grouping the latter was closely related to tarsiers monkeys and apes how these two groups relate to extant primates is unclear omomyids perished about 30 mya while adapiforms survived until about 10 mya