Which of the following statements is true of the fossil haplorrhines and the propliopithecids?
A) They were nocturnal.
B) They had claws.
C) They had a 2.1.2.3 dental formula.
D) They had a 2.2.4.4 dental formula.

Question

Quizplus · Accepted Answer

Haplorrhines and propliopithecids both had a 2.1.2.3 dental formula, meaning that they had two incisors, one canine, two premolars, and three molars in each quadrant of their jaws. They also did not have claws, but instead had flat nails. It is unclear whether they were nocturnal or diurnal. The dental formula 2.2.4.4 is actually found in Old World monkeys and apes, which evolved later than the haplorrhines and propliopithecids.

Which of the Following Statements Is True of the Fossil