National Geographic : 1978 Jan
MUGGER CROCODILE ( SMOOTH-FRONTED CAIMAN O SAFE ( DECLINING * ENDANGERED PAINTINGBYROBERTE. HYNES NATIONALGEOGRAPHICARTDIVISION The crocodilians' shrinking realm SURVIVORS OF THE DINOSAUR AGE, the once flourishing order Crocodilia largely inhabits tropical and semitropical regions. Only 21 species and seven subspecies remain, 20 of which are shown above. They are divided into three families according to variations in skull, scales, and teeth-all adaptations to different habitats and diets. Alligators and caimans form one family, their broad snouts useful for crushing and eating a variety of small animals, birds, and fish. Except for the critically endangered Chinese alligator, they inhabit the Americas.