Juvenile crocodile skull

Crocodiles are reptiles belonging to the crocodile family and the crocodile family, with 8 genera and 23 species. Crocodiles have a longer trunk; Muscle development; The head is flat, the skin on the head is tightly attached to the skull, and the skull is firmly connected and cannot move; Teeth are cone-shaped and grow in the alveolar cavity, with more than 25 teeth on each side; The tongue is short and flat, unable to extend outward; Eyes small and slightly protruding; The tail is thick and slightly flattened; Thick and short limbs; The external nostril is located on the back of the snout, with a valve above it; There are scales resembling armor. As one of the oldest species on Earth to date, it preserves many features of early dinosaur reptiles and is also known as "living fossils".