Researchers announced the discovery of a fossil of a previously unknown type of dinosaur.

The fossil was found at an ancestral Pueblo site in Utah. Researchers said the bones would have been clearly visible to the previous inhabitants of the 200-foot-high cliff dwelling -- a dinosaur footprint was found on a stone used to build a house at the village.

Despite the Puebloan nature of the find, researchers gave the dinosaur a Navajo name. They are calling it Seitaad ruessi -- Seit'aad is the Navajo word for a sand-desert creature that used to roam the area.

The dinosaur lived 185 million years ago.

Get the Story:
New dinosaur species found in Utah sandstone (AP 3/23)
Navajo sandstone yields rare dinosaur find (The Salt Lake Tribune 3/24)

Get the Study:
A New Basal Sauropodomorph Dinosaur from the Lower Jurassic Navajo Sandstone of Southern Utah ( Sertich JJW, Loewen MA, 2010 A New Basal Sauropodomorph Dinosaur from the Lower Jurassic Navajo Sandstone of Southern Utah. PLoS ONE 5(3): e9789. doi:10.1371/journal.pone.0009789)