# Dinosaurs
New Reasons for the Demise of the Dinosaurs
The extinction event may be better thought of as a still-shot from a video. Once the Earth was dominated by a diverse group of amazing animals, the dinosaurs. While there are competing taxonomies, there are about 700 known species of dinosaurs in about 300 genera. Dinosaurs filled niches across ecosystems with theropod species smaller than chickens to long-necked sauropods that shook the Earth with their passage. Dinosaurs have not only fascinated us with their variety but also with their longevity on the Earth. Dinosaurs dominated the world for 170 million years.
Pieces of the Asteroid That Killed the Dinosaurs Are Found in Hell Creek Formation, North Dakota
Hell Creek State park, site of the asteroid fragmentsWikimedia Commons. Experts believe the impact crater to be in Chicxulub, off the coast of Mexico. Along with the asteroid, scientists also found dead fish, a turtle impaled with a stick, and a dinosaur’s foot. The Hell Creek formation is 2,000 miles from the Chicxulub impact crater, which gives us an idea about the intensity of the asteroid’s collision with earth.
Related Contributors
Which Exhibits are THE MOST POPULAR at the Chicago Field Museum
This video is my 14th installment for my mini-series on the "Field Museum" in Chicago. Here we walk though the China exhibit to explore some other parts of the 3rd floor - debatably the MOST POPULAR exhibits throughout the whole museum. These exhibits are "Evolving Planet" and "Dinosaur Hall', and will be discussed in greater detail during future videos. Be sure to follow me on NewsBreak for more Chicago content!
A Real Jurassic Park
70-million-year-old Perfectly Preserved Baby Dinosaur Raises New Questions. A 70-million-year-old fossilized baby dinosaur was found. Then it was stored and lost in a Chinese museum for 10 years. No one knew what was in the unhatched egg until researchers opened it. To their amazement was the perfectly preserved embryonic skeleton of an oviraptorid dinosaur.
Dinosaurs at the Moab, Utah Copper Ridge
The "Copper Ridge Tracksite" is famous for ancient tracks of an Allosaurus-like dinosaur that limped as it walked. It is likely that this theropod suffered some injury that made it painful to walk and therefore favored one leg over the other. The fossilized behavior demonstrates this dinosaur was in Jurassic pain. Come with Colorado Martini as they find these Jurassic tracks just north of Moab, Utah.