The clicking of flattened teeth, discovered by accident, could be “the first documented case of deliberate sound production in sharks,” evolutionary biologist Carolin Nieder, of Woods Hole ...

E. D. Cope, struck by the remarkable fact that the molar teeth, both upper and lower, of all the mammals from the Puerco or lowest Eocene horizon of North America carry three cusps arranged in ...

Complex teeth with multiple cusps in an African cichlid fish. The cichlid fish of Africa's Great Lakes have formed new species more rapidly than any other group of vertebrates. A new study shows that ...

or "complex" teeth with multiple cusps that can adapt to feed on different prey. Peoples spent two years examining the teeth of over 30,000 species of fish, including 1,000 species of African ...

Folivorous langurs have cheek teeth with taller cusps and longer shearing blades than do hard-object-feeding mangabeys. Frugivores, and those with broad diets, are intermediate in occlusal relief ...