• Wikimedia US Mountain West Spring 2025 online meeting, Tuesday, May 13, 2025, 8:00-9:00 PM MDT
• Wikimedia US Mountain West Summer 2025 online meeting, Tuesday, August 12, 2025, 8:00-9:00 PM MDT
• Wikimedia US Mountain West Autumn 2025 online meeting, Tuesday, November 11, 2025, 8:00-9:00 PM MST

• Events elsewhere

Mounted skeleton of S. stenops (nicknamed "Sophie"), Natural History Museum, London

Stegosaurus (/ˌstɛɡəˈsɔːrəs/; lit. 'roof-lizard') is a genus of herbivorous, four-legged, armored dinosaur from the Late Jurassic, characterized by the distinctive kite-shaped upright plates along their backs and spikes on their tails. Fossils of the genus have been found in the western United States and in Portugal, where they are found in Kimmeridgian- to Tithonian-aged strata, dating to between 155 and 145 million years ago. Of the species that have been classified in the upper Morrison Formation of the western US, only three are universally recognized: S. stenops, S. ungulatus and S. sulcatus. The remains of over 80 individual animals of this genus have been found. Stegosaurus would have lived alongside dinosaurs such as Apatosaurus, Diplodocus, Camarasaurus and Allosaurus, the latter of which may have preyed on it.

They were large, heavily built, herbivorous quadrupeds with rounded backs, short fore limbs, long hind limbs, and tails held high in the air. Due to their distinctive combination of broad, upright plates and tail tipped with spikes, Stegosaurus is one of the most recognizable kinds of dinosaurs. The function of this array of plates and spikes has been the subject of much speculation among scientists. Today, it is generally agreed that their spiked tails were most likely used for defense against predators, while their plates may have been used primarily for display, and secondarily for thermoregulatory functions. Stegosaurus had a relatively low brain-to-body mass ratio. It had a short neck and a small head, meaning it most likely ate low-lying bushes and shrubs. One species, Stegosaurus ungulatus, is one of the largest known of all the stegosaurians, with the largest known specimens measuring about 7.5 metres (25 ft) long and weighing over 5 metric tons (5.5 short tons). (Full article...)

State Highway 82 (SH 82) is an 85.3-mile-long (137.3 km) state highway in the U.S. state of Colorado. Its western half provides the principal transportation artery of the Roaring Fork Valley on the Colorado Western Slope, beginning at Interstate 70 (I-70) and U.S. Highway 6 (US 6) in Glenwood Springs southeast past Carbondale, Basalt and Aspen. From there it continues up the valley to cross the Continental Divide at Independence Pass. On the Eastern Slope, it follows Lake Creek past some of Colorado's highest mountains to Twin Lakes Reservoir, where it ends at US 24 south of Leadville.

At 12,095 feet (3,687 m) above sea level, the traverse of Independence Pass is the highest paved crossing of the Continental Divide in North America, and the highest paved through road on Colorado's state highway network. The pass is closed during the winter months, isolating Aspen from the east and making Highway 82 the only way to reach the popular ski resort town by road. A private foundation has worked with the Colorado Department of Transportation (CDOT), which maintains the road, to undo environmental damage to the alpine tundra created when a disused stagecoach route built across the pass during the Colorado Silver Boom of the 1880s became Highway 82 in the early 20th century. (Full article...)

Rocky Mountain National Park

The 23 national parks in Colorado:

• Amache National Historic Site
• Arapaho National Recreation Area
• Bent's Old Fort National Historic Site
• Black Canyon of the Gunnison National Park
• Browns Canyon National Monument
• Camp Hale-Continental Divide National Monument
• Canyons of the Ancients National Monument
• Chimney Rock National Monument
• Colorado National Monument
• Continental Divide National Scenic Trail
• Curecanti National Recreation Area
• Dinosaur National Monument
• Florissant Fossil Beds National Monument
• Great Sand Dunes National Park and Preserve
• Hovenweep National Monument
• Mesa Verde National Park and World Heritage Site
• Old Spanish National Historic Trail
• Pony Express National Historic Trail
• Rocky Mountain National Park
• Sand Creek Massacre National Historic Site
• Santa Fe National Historic Trail
• Yucca House National Monument

• Outline of Colorado, Index of Colorado articles
• Colorado, History, Prehistory, Timeline
• Government, Counties, Cities, Places
• Geography, Colorado Plateau, High Plains
• Rocky Mountains, Ranges, Peaks, Passes
• Continental Divide, Rivers, Drainage basins
• Category:Colorado, Commons:Category:Colorado