A right lower jaw of the Alligator lizard, Gerrhonotus, from the Dove Spring Formation (upper lateral view and lower medial view). Scale equals 1 mm or about 1/25 inch.
A modern alligator lizard, Gerrhonotus coerulus. (Adopted from the website of the Canadian Museum of Nature).
Did you know?
The fossils of prehistoric animals during the past 7-12 million years ago can be found entombed in the sediments, including extinct elephants, rhinos, three-toed horses, giraffe-like camels, saber-toothed cats, and bone-crushing dogs. There are also fascinating small creatures such as ancestral skunks, alligator lizards, and shrews.