Teeth and pieces of bony armor from crocodilians are very common. at Dinosaur Park. The teeth were pointed and cone-shaped, very different from the serrated and flattened teeth of most meat-eating dinosaurs. The presence of crocodiles provides important clues about the prehistoric environment. Modern crocodiles are ectothermic ("cold-blooded"), meaning that their body temperature is dependent on the air around them. This means that crocodiles can only live in areas without long periods of freezing temperatures. Since crocodiles were plentiful in ancient Maryland, the climate must have been warm and subtropical.