However, the Coconino Sandstone within the park does preserve evidence of some of the unusual creatures that lived during the Permian ... the environment in Arizona was much cooler than it ...

When visiting Arizona sites like the Grand Canyon ... become overrun with people wanting to experience its incredible ...

The Permian age skeleton was found in late October in the backcountry of Canyonlands, at the bottom of a sandstone wash ... Forest National Park in Arizona. Dr. Adam Marsh, lead paleontologist ...

The Permian Basin oil field in southeast New Mexico ... The primary producing rock types are limestone, dolomite and sandstone that have high porosities. But advances in horizontal drilling ...