Like with living primates, we are able to definitively distinguish catarrhines from platyrrhines in the fossil record by what feature

The structure of their noses.

Explanation:

Catarrhines are distinguished from platyrrhines by several traits but the main distinctive feature between them, is the structure of their noses. This forms the basis of their names.

Platyrrhines are characterized by laterally-placed, rounded nostrils or flat-nosed while catarrhines have narrow, downward-facing nostrils or hooked-nosed.

Another distinguishing feature include their dental formulation which is 2.1.2.3 in catarrhines and 2.1.3.3 in platyrrhines.

The skull structure of catarrhines have frontal bone which make contact with the sphenoid bone unlike the platyrrhines.

Generally, catarrhines are much bigger in size than platyrrhines.

is this for the e2020 class

the correct answers are;

a. the rock was made from more than one type of material.

e. layers of hot liquids in the rock cooled and solidified at different temperatures.

these are the two options that are related to the statement given above.