Final answer:
The largest crocodile species, whether extinct or not, is the Saltwater crocodile. It is found in tropical habitats of Southeast Asia, Northern Australia, and Eastern India.
Step-by-step explanation:
The largest crocodile species, whether extinct or not, is the Saltwater crocodile (Crocodylus porosus). It is also known as the estuarine crocodile and is found in the tropical habitats of Southeast Asia, Northern Australia, and Eastern India. The Saltwater crocodile is the largest living reptile, with males reaching lengths of up to 7 meters (23 feet). They have a higher average size compared to other crocodile species, such as the Nile crocodile, American crocodile, and Gharial.