The Aztec Sandstone is an Early Jurassic geological formation of primarily eolian sand from which fossil pterosaur tracks have been recovered. The formation...

pterosaurs. It has been found in, among other units, the Lower Jurassic Aztec Sandstone, the Shengjinkou Formation and Lake Ezequiel Ramos Mexia in the Candeleros...

calcium carbonate and iron oxides. They developed as the colorful Aztec Sandstone. During a mountain-building period called the Laramide orogeny around...

Overton, Nevada. The state park derives its name from red sandstone formations, the Aztec Sandstone, which formed from shifting sand dunes 150 million years...

the west, across Lake Mead. The rock formations are composed of red Aztec Sandstone, fossil sand dunes. Many of the features are small erosional fins,...

Aztec Butte is a sandstone summit, elevation 6,312 feet (1,924 meters), located in the Island in the Sky District of Canyonlands National Park, in San...

Monument Valley in Utah are unmarked by such weathering. In contrast, the Aztec Sandstone of The Valley of Fire in Nevada exhibits delicate and widespread honeycomb...

known from the Early Jurassic of Arizona (Aztec Sandstone and Navajo Sandstone), California (Aztec Sandstone) and Utah. Dinosaurs portal Paleontology portal...

Coconino Sandstone is a geologic formation named after its exposure in Coconino County, Arizona. This formation spreads across the Colorado Plateau province...

often dropping well below freezing. Rainbow Mountain is composed of Aztec Sandstone which formed about 180–190 million years ago as lithified sand dunes...