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.
The U.S. Air Force Academy announced that Vice President JD Vance will be the guest speaker for this year's commencement ceremony.
The sounds of screaming teenagers echoed through the Denver Performing Arts Complex on Friday night as students, directors and families gathered for the annual Bobby G Awards, Colorado's premier high school musical theater competition.
University of Colorado Regent Wanda James has filed a federal lawsuit challenging a censure issued by the Board of Regents after she criticized a public health campaign she said included racist imagery.
Commerce City police are sounding the alarm about a recent increase in copper-related thefts. They shared surveillance video and photos of the aftermath from multiple thefts.
In a 5-2 decision, the state supreme court has ruled that Children's Hospital Colorado must continue treatments for transgender youth.
The U.S. Air Force Academy announced that Vice President JD Vance will be the guest speaker for this year's commencement ceremony.
The sounds of screaming teenagers echoed through the Denver Performing Arts Complex on Friday night as students, directors and families gathered for the annual Bobby G Awards, Colorado's premier high school musical theater competition.
University of Colorado Regent Wanda James has filed a federal lawsuit challenging a censure issued by the Board of Regents after she criticized a public health campaign she said included racist imagery.
Commerce City police are sounding the alarm about a recent increase in copper-related thefts. They shared surveillance video and photos of the aftermath from multiple thefts.
In a 5-2 decision, the state supreme court has ruled that Children's Hospital Colorado must continue treatments for transgender youth.
Former Mesa County Clerk Tina Peters could be compensated for her time in Colorado prison time, according to the vice president.
Police in Denver investigated a car crash early Tuesday morning, where investigators believe a vehicle crashed, causing massive damage.
Denver picked up some much-needed rain and snow recently, but the Mile High City is still running well behind. Colorado's low snowpack is also a concern for the city.
The sounds of screaming teenagers echoed through the Denver Performing Arts Complex on Friday night as students, directors and families gathered for the annual Bobby G Awards, Colorado's premier high school musical theater competition.
University of Colorado Regent Wanda James has filed a federal lawsuit challenging a censure issued by the Board of Regents after she criticized a public health campaign she said included racist imagery.
Ronda Rousey used her signature armbar to stop Gina Carano just 17 seconds into a comeback bout between the two MMA fighters.
FIFA President Gianni Infantino joked that if someone does pay $2 million for a ticket to the World Cup final, "I will personally bring him a hot dog and a Coke."
The Preakness Stakes featured its biggest field in 15 years with 14 horses in the middle jewel of horse racing's Triple Crown.
The Broncos full NFL schedule is out and includes late-season rematches against Denver's 2025 playoff opponents.
The NHL announced that the Colorado Avalanche will be playing their first game of the Western Conference finals next Wednesday.
Polymarket users can now trade on private companies' valuations, IPOs and secondary market activity.
Many Americans are signaling disapproval of the technology amid fears that it will eclipse already competitive entry-level jobs.
Investigators have been looking at a handful of Chinese firms that together control the majority of unrefrigerated shipping container manufacturing around the globe, the sources said.
A security guard who was among the victims killed in a shooting at the Islamic Center of San Diego is being hailed for his heroism and bravery during the attack.
Independent scientists say the technology, while impressive, lacks some components to be truly considered an artificial egg.
University of Colorado Regent Wanda James has filed a federal lawsuit challenging a censure issued by the Board of Regents after she criticized a public health campaign she said included racist imagery.
Investigators have been looking at a handful of Chinese firms that together control the majority of unrefrigerated shipping container manufacturing around the globe, the sources said.
Survivors say they'd asked for more medical support before the Iranian drone strike that killed six U.S. soldiers at their command post in Kuwait in the war's first 24 hours.
An uptick in people skipping Obamacare premium payments in many states suggests the Affordable Care Act's rising costs are hitting home for 2026 enrollees.
Acting Attorney General Todd Blanche announced the creation of the fund as part of the settlement of President Trump's lawsuit against the IRS over the leaking of his tax returns.
An uptick in people skipping Obamacare premium payments in many states suggests the Affordable Care Act's rising costs are hitting home for 2026 enrollees.
An American medical missionary in the Democratic Republic of the Congo was evacuated after testing positive for Ebola.
The virus behind the latest Ebola outbreak is the Bundibugyo virus, which is less common and there is no vaccine or treatment.
The Trump administration announced it's restricting people who don't have U.S. passports from entering the country if they have been in Congo, South Sudan or Uganda amid the Ebola outbreak.
A Colorado man in need of a kidney was saved by a movie fan. Now he's working to help others find donors through cinema.
Polymarket users can now trade on private companies' valuations, IPOs and secondary market activity.
Many Americans are signaling disapproval of the technology amid fears that it will eclipse already competitive entry-level jobs.
The Denver City Council unanimously voted to pass a moratorium to halt the construction of data centers for the next year after several hours of community testimony on Monday night.
An uptick in people skipping Obamacare premium payments in many states suggests the Affordable Care Act's rising costs are hitting home for 2026 enrollees.
U.S. wage growth is lagging inflation for the first time since 2023, eroding consumers' purchasing power.
A federal system is working to crack down on trucks skirting safety regulations, a problem inspectors are seeing on Colorado roadways.
Glendale city leaders are forcefully opposing Colorado's proposed Bus Rapid Transit project on Colorado Boulevard, warning the plan could dramatically worsen traffic for drivers while delivering only modest transit gains.
A jury in Douglas County awarded a New Jersey man $24 million after he sued a Parker police detective for malicious prosecution and false arrest.
A Denver County Court judge on Friday sentenced a vocal police critic to 60 days in jail and two years of probation, saying he needed to send a message that would deter her and her YouTube followers from future doxing of law enforcement.
City-funded contractors have been moving through Denver neighborhoods, replacing sections of sidewalks, frustrating some homeowners. The work was part of a broader program aimed at making city sidewalks more usable and accessible.