Kaycee Wyoming’s Giant Dino Discovery

Wyoming is rich in dino fossil evidence. When we look back at the geological and the ever-changing climate history of this state, we can see why.

Based on recent paleontological findings in Wyoming, there are several major "long neck" (sauropod) and other significant dinosaur discoveries from the region, though a specific, recent, widely publicized single "femur" find in Kaycee itself is not detailed in the provided search results.

However, the search results highlight major related discoveries in Wyoming:
Significant Sauropod Finds: A 74-foot-long sauropod, Ardetosaurus viator, was discovered near Shell, Wyoming.

The gentleman in the video below is working on a rather long femur four around Kaycee of one of the largest dinosaurs we know of.

"Jimbo" the Supersaurus: Supersaurus Vivianae was discovered near Douglas, Wyoming (roughly 60 miles from Kaycee) in 1995, one of the largest sauropods known.

Oldest North American Dinosaur: A 230-million-year-old, chicken-sized ancestor of the sauropod named Ahvaytum bahndooiveche was identified in Wyoming, as reported in January 2025.

"Mummy" Zone: Extensive dinosaur "mummies" (including duck-billed dinosaurs with skin and hooves) have been discovered in the Wyoming badlands, notably near Lusk.

Numerous dinosaur bones, including species like Allosaurus, Diplodocus, and Apatosaurus, are regularly found near Casper, Wyoming, particularly in the Morrison Formation. The Tate Geological Museum leads active, annual excavations, such as the recent discovery of "Woody’s Dinosaur" near Alcova and the identification of a new, small feathered dinosaur, "Lori" (Hesperornithoides).

Key Discoveries and Sites near Casper:
Marton Ranch/Alcova Area: A major source of Jurassic fossils where a large, multi-year excavation of a sauropod (potentially Diplodocus or Apatosaurus) has been conducted.
"Lori" (Hesperornithoides): A small feathered theropod found in 2001 near the "Jimbo" quarry, initially misidentified as a pterosaur.

Tate Geological Museum Excavations: Located at Casper College, the museum runs annual digs, discovering thousands of bones.

"Lee Rex": The first Tyrannosaurus rex found in Wyoming that stayed in the state was excavated by the Tate Museum.

Wyoming Dinosaur Center (Thermopolis/Casper Area): Located nearby, they have excavated thousands of bones from the Morrison Formation.