A Ceratosaurus fossil that is one of only four known to exist has sold for $30.5 million at auction. The rare dinosaur fossil is “one of the finest and most complete examples of its kind ever found,” ...

The largest piece of Mars ever found on Earth was sold for just over $5 million at an auction of rare geological and archaeological objects in New York on Wednesday, while a juvenile dinosaur skeleton ...

An auction in New York City featured rare geological artifacts, including the largest piece of Mars sold for $5.3 million and a juvenile dinosaur skeleton that fetched over $30 million, marking it as ...

A rare juvenile Ceratosaurus fossil, discovered in Wyoming in 1996, fetched $30.5 million at a Sotheby's auction. This nearly ...

The Cheyenne Frontier Days kicked off with a lively parade downtown, featuring marching bands and colorful floats under sunny ...

The National Weather Service warns of possible severe storms Saturday afternoon in Cheyenne, bringing gusty winds and hail, ...