homodont

Homodont denotes dentition in which all teeth are of the same shape and size, yielding a uniform tooth row. The term comes from Greek homo- meaning "same" and odontos meaning "tooth."

It is common in many non-mammalian vertebrates. Among reptiles, crocodilians and most lizards typically have homodont dentition. Among cartilaginous fishes, such as many species of sharks, teeth are generally similar in form across the jaw. Some aquatic mammals, notably many toothed whales, also show relatively uniform teeth, though not universally so.

In contrast, most mammals, including humans, have heterodont dentition with multiple tooth types adapted for biting, tearing, and grinding. The presence of homodont dentition informs discussions of feeding ecology and developmental biology; it also reflects evolutionary pathways in which tooth specialization is reduced or absent.