In 1964, a more complete skeleton was discovered, including the skull. Welles named it Megalosaurus wetherilli in 1954 the specific epithet honors Navajo councilor John Wetherill. Three skeletons of this animal were discovered in the Kayenta Formation of Navajo County, Arizona in 1940, and two skeletons of excellent quality were found by Jesse Williams in 1942. It lived 193 million years ago, during the Sinemurian stage of the Early Jurassic. ![]() ![]() Dilophosaurus, with a name meaning “double-crested reptile,” is a small to medium-sized species of theropod dinosaur in the family Dilophosauridae.
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