Scientists are still on the fence about the evolutionary purpose of narwhal tusks. Butthere are a number of prevailing theories about their purpose. “Although the tusks don’t appear externally in the ...

With their long, spiral tusks, narwhals (Monodon monoceros) look like something out of a fairy tale. Primarily seen in male narwhals, these single elongated teeth that can grow up to 10 feet.

From the genome of a mystery-animal’s skull found in West Greenland in 1990, scientists have identified the creature as the male offspring of a female narwhal and male beluga, they reported yesterday ...

It had unusual teeth — miniature tusks on the upper jaw, and corkscrew-like lower teeth — and looked different from the skulls of both belugas and narwhals. The study, which included a ...