Original: Further analysis of oxygen and carbon isotopes from teeth of megafauna indicate the arid regional climates at the time of extinction were similar to arid regional climates of today , and that the megafauna were well adapted to arid climates .
Simplified: Further study of the teeth of megafauna shows the climate was dry at the time of extinction , similar to the dry climate of today , and that the megafauna were able to live in dry climates .