Two Idaho Oviraptorids with a horse-sized tyrannosaur.

The Idaho Oviraptorid is a species of oviraptorid from the Late Cretaceous Wayan Formation of Idaho in the United States. It is only known from large eggs, but the size of these eggs suggest that it was a rather large animal. It lived 100 million years ago and, if the size based off its egg size is correct, the largest dinosaur known from Idaho. Its eggs have been put into the oogenus Macroelongatoolithus, but the species will presumably get its own scientific name if bones of the species are described, similar to its Asian relative Beibeilong.

Community content is available under CC-BY-SA unless otherwise noted.