Questions 13–15 relate to the geologic cross section below. Note that the legend lists rock types in alphabetical, rather than stratigraphic, order. 

South America split from Africa during ________.

Mendel actually discovered ________, but didn’t realize it. 

Concerning relative ages of the granite and sandstone, ________. 

What was formerly called Brontosaurus is now called ________.

About 88% of geological time is represented by the time span informally called the ________.

Pangea began to break up during the ________ Era.

Numerical ages for boundaries between time units on the geologic time scale primarily resulted from the study of ________, in conjunction with relative age data. 

Which of the following contains only Paleozoic Periods? 

The ________ are a geologically old mountain range that folded and deformed during the late Paleozoic.