Where does NZ fit into the Theory of Continental Drift?

Where does NZ fit into the Theory of Continental Drift?

Why does NZ not have any crocodiles?

In New Zealand, there are no crocodiles at all. No introduced, and no native. This is because the land that would later become New Zealand, broke off from Gondwanaland, more specifically Australia, just as the crocodiles were starting to develop in Australia. 

 Why are there no evidence of Woolly Mammoths in NZ?

Woolly Mammoth fossils have never been found in NZ. It is believed that the Woolly Mammoth could not survive in NZ's climate and condition at the time.