Scientists say they've solved debate about origins of mysterious dinosaur
The discovery "rewrites decades of research on Earth's most famous predator," the study's co-author said.
Watch CBS News
The discovery "rewrites decades of research on Earth's most famous predator," the study's co-author said.
Apex predators, like the Tyrannosaurus rex, eventually arose from smaller-bodied tyrannosauroid dinosaurs called Khankhuuluu mongoliensis, the study's researchers said.
The researchers determined it predated T. rex by up to 7 million years, showing that tyrannosaurs were in North America long before paleontologists previously thought.
The 200-pound skull fossil, nicknamed Maximus, is being sold by an owner who wishes to remain anonymous, the auction house said.
Rare prehistoric dinosaur footprints discovered in the UK have shed new light on the middle Jurassic period, according to a new report.
The rare Triceratops fossil found at a construction site in Thornton has a name: Tiny. Students at Brantner Elementary School named the 66-million-year old dinosaur.
It was nearing the end of summer when a construction site inspector noticed something out of the corner of his eye no bigger than a quarter that turned out to be something much bigger.
Even more dinosaur bones have surfaced at the dig for Triceratops in Thornton. This is the latest in a series of fossil discoveries at the site in the past month.
More Triceratops fossils were found Monday at the site of the big triceratops discovery last month in Thornton.
The digging continues at the site of the big triceratops discovery in Thornton, and this week evidence of another dinosaur was found.
The Denver Broncos promised there would be a few tricks and treats at Sunday's home game at the Chargers, and one of the best of those came from a cheerleader.
Dinosaur Ridge in Morrison have uncovered more mysteries about dinosaurs, particularly how they mate.
Lone Tree Police Department wants parents to know the risks and the rules that come with each kind of e-bike.
A veteran Denver commercial real estate broker warned elected Denver officials in December of 2023 to scrap their plans to buy the Denver Post building for $88.5 million.
A sergeant in the Jefferson County Sheriff's Office who served on the SWAT team at the Evergreen High School shooting is out of a job after admitting he showed up to the shooting under the influence of alcohol.
A winter storm is brewing and ready to head toward the high country starting Friday night. The potential for dangerous driving conditions is very high in the mountains.
First adapted from a novel into a film, now "The Notebook" is the latest musical to come to life on stage at the Denver Center for the Performing Arts.
Lone Tree Police Department wants parents to know the risks and the rules that come with each kind of e-bike.
The body of a young woman who went missing over the weekend has been located. That's according to the family of Kaylee Russell, a 20-year-old from Evans.
A veteran Denver commercial real estate broker warned elected Denver officials in December of 2023 to scrap their plans to buy the Denver Post building for $88.5 million.
A sergeant in the Jefferson County Sheriff's Office who served on the SWAT team at the Evergreen High School shooting is out of a job after admitting he showed up to the shooting under the influence of alcohol.
A winter storm is brewing and ready to head toward the high country starting Friday night. The potential for dangerous driving conditions is very high in the mountains.
A sergeant in the Jefferson County Sheriff's Office who served on the SWAT team at the Evergreen High School shooting is out of a job after admitting he showed up to the shooting under the influence of alcohol.
Two schools in Westminster are on secure status due to the investigation of a death close to or in a nearby park that was called suspicious.
The body of a young woman who went missing over the weekend has been located. That's according to the family of Kaylee Russell, a 20-year-old from Evans.
A veteran Denver commercial real estate broker warned elected Denver officials in December of 2023 to scrap their plans to buy the Denver Post building for $88.5 million.
Lone Tree Police Department wants parents to know the risks and the rules that come with each kind of e-bike.
Longtime baseball executive Josh Byrnes has been named the new GM of the Colorado Rockies, marking a return to the ball team.
Denver Broncos defensive end Zach Allen partnered with the Boys & Girls Clubs of Metro Denver to take some of the children on a holiday shopping spree.
The Denver Broncos are a relatively young team with a starting quarterback who's only in his second year, and yet they're playing like a team of polished veterans.
A man from Colorado who now lives overseas is taking a little extra pride in his work now that his honey is being used in an official partnered beverage of the Denver Broncos.
Veteran football coach Jim Mora has arrived in Fort Collins and was introduced by Colorado State University as their next Rams head coach.
The Trump administration said it would reduce the period of time that work permits are valid for refugees, asylees and other immigrants granted legal protections in the U.S.
Rents in the 50 largest cities have surged by hundreds of dollars per month over the last five years, a LendingTree analysis found.
Job cuts so far this year are at their highest levels since 2020, new report says.
A clinical study into weight loss drugs for pets just launched, with results from the trial expected by next summer.
President Trump suggested Americans won't have to pay personal income taxes "in the not-too-distant future" because of rising U.S. tariffs.
The Trump administration said it would reduce the period of time that work permits are valid for refugees, asylees and other immigrants granted legal protections in the U.S.
President Trump suggested Americans won't have to pay personal income taxes "in the not-too-distant future" because of rising U.S. tariffs.
Senate Minority Leader Chuck Schumer announced Thursday that Democrats will offer a clean three-year extension of enhanced Affordable Care Act tax credits for a vote next week.
"What I saw in that room was one of the most troubling things I've seen in my time in public service," Democratic Rep. Jim Himes said.
Three months after her husband, Charlie Kirk, was assassinated, Erika Kirk will open up about life, loss, the state of political discourse and more in a one-hour town hall event moderated by Bari Weiss, CBS News' editor-in-chief.
A clinical study into weight loss drugs for pets just launched, with results from the trial expected by next summer.
The CDC's vaccine advisory panel meets Thursday and Friday to discuss recommendations for the hepatitis B vaccine and the schedule of childhood shots.
The former officials said the FDA's plans to revamp how certain life-saving vaccines are handled would "disadvantage the people the FDA exists to protect, including millions of Americans at high risk from serious infections."
Patients with affected devices should stop using them. They are eligible for free replacements, Abbott said.
The three-dose hepatitis B vaccine has a long track record of safety, but rolling back recommendations could leave kids vulnerable to infections, doctors say.
Rents in the 50 largest cities have surged by hundreds of dollars per month over the last five years, a LendingTree analysis found.
Job cuts so far this year are at their highest levels since 2020, new report says.
President Trump suggested Americans won't have to pay personal income taxes "in the not-too-distant future" because of rising U.S. tariffs.
The Trump administration proposed rules that would weaken fuel economy standards for vehicles set under President Biden in 2024.
Weakening job growth could lock in an interest rate cut by the Federal Reserve next week, according to economists.
A veteran Denver commercial real estate broker warned elected Denver officials in December of 2023 to scrap their plans to buy the Denver Post building for $88.5 million.
Colorado is now among the states under a microscope from the U.S. Department of Transportation, after several high-profile crashes involving drivers who couldn't understand road signs written in English.
Before the Broncos won in Week 11, the game at Empower Field at Mile High was preceded by a tense showdown between an air traffic controller and the pilot of a single-engine aircraft.
On Sept. 4, the body of Kathleen Mayo was found inside her first floor unit. Police say she was murdered.
A family in Elbert County has filed a federal lawsuit against the small town of Elizabeth over its curfew law.