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.
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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.
This season's lack of snow isn't just affecting businesses in mountain communities. A historically dry winter across Colorado has left some people who rely on snow for work... waiting.
Much needed rain brought cooler temperatures across Colorado's Front Range and northeastern plains on Tuesday. The sudden shift in weather patterns also produced a cold-air funnel cloud, much earlier in the season than usual.
More than 2 years after Denver began requiring rental licenses for landlords, the city is increasing penalties.
Low snowpack and warmer temperatures are forcing major changes at both marinas on Dillon Reservoir ahead of the boating season.
It's been a long few days in the Middle East. The war with Iran has meant missile and drone attacks between Iran and Israel and other countries as well.
This season's lack of snow isn't just affecting businesses in mountain communities. A historically dry winter across Colorado has left some people who rely on snow for work... waiting.
Much needed rain brought cooler temperatures across Colorado's Front Range and northeastern plains on Tuesday. The sudden shift in weather patterns also produced a cold-air funnel cloud, much earlier in the season than usual.
More than 2 years after Denver began requiring rental licenses for landlords, the city is increasing penalties.
Low snowpack and warmer temperatures are forcing major changes at both marinas on Dillon Reservoir ahead of the boating season.
It's been a long few days in the Middle East. The war with Iran has meant missile and drone attacks between Iran and Israel and other countries as well.
Watch Alex Lehnert's forecast
NBA Hall of Famer and Colorado basketball legend Chauncey Billups is scheduled to appear in court in alleged connection to illegal gambling ring on Wednesday.
Gov. Jared Polis comments on Tina Peters' 9-year prison sentence for actions during her time as Mesa County Clerk and Recorder.
Dozens of Broomfield High School students who are not vaccinated were asked to stay home from school after two cases of confirmed measles at the school.
This season’s lack of snow isn’t just affecting businesses in mountain communities. A historically dry winter across Colorado has left some people who rely on snow for work, waiting.
Olympic City's newest celebrities are back home in Colorado with new hardware. Just weeks after competing at the Games, Ellie Kam and Danny O'Shea are already back on the ice and others at the rink are eager to see them.
The University of Colorado community is mourning the death of quarterback Dominiq Ponder, who was killed in a car crash. Monday was supposed to mark the start of spring football practice.
Whether it's scoring or rebounding, Olivia Reed Thyne legacy at Colorado Mesa is cemented.
On Sunday evening, Coach Deion Sanders announced the death of University of Colorado quarterback Dominiq Ponder.
Connor Hellebuyck stopped 41 of Team Canada's 42 shots in the Olympic gold medal match.
United said it could permanently ban travelers who refuse to wear headphones while listening to audio or video content on its flights.
Documents released by the Justice Department provided a look into Howard Lutnick's ties to convicted sex offender Jeffrey Epstein.
Many of the agents who were fired last week by FBI Director Kash Patel were assigned to a squad that worked on global counterintelligence cases, including those involving Iran, sources said.
Tests of dozens of baby formulas by Consumer Reports found that nearly half contained potentially dangerous chemicals.
President Trump's special envoy Steve Witkoff told Fox News that Iranian negotiators said Iran had the "inalienable right to enrich all their nuclear fuel."
Documents released by the Justice Department provided a look into Howard Lutnick's ties to convicted sex offender Jeffrey Epstein.
Many of the agents who were fired last week by FBI Director Kash Patel were assigned to a squad that worked on global counterintelligence cases, including those involving Iran, sources said.
Two sources familiar with the U.S. military's use of artificial intelligence confirm that the U.S. used Anthropic's Claude AI model over weekend for the attack on Iran — and is still using it.
Israel sent troops into Lebanon as the U.S.-Israeli war with Iran widened, and some of Iran's Gulf neighbors warned that Iran's retaliatory fire could draw them into the spreading conflict.
Some Republican state lawmakers and health associations are pushing back against spending plans under the Trump administration's $50 billion federal rural health fund.
Tests of dozens of baby formulas by Consumer Reports found that nearly half contained potentially dangerous chemicals.
Some Republican state lawmakers and health associations are pushing back against spending plans under the Trump administration's $50 billion federal rural health fund.
The Colorado Department of Public Health and Environment and Adams County Health Department confirmed a new case of measles on Monday and are warning Broomfield and Westminster residents about possible exposure.
USALESS.COM is recalling its Rhino Choco VIP 10X product due to the undeclared presence of Tadalafil, which is the active ingredient in Cialis.
The Colorado Department of Public Health and Environment says a Broomfield child with a confirmed case of measles recently visited multiple locations across the metro area while they were contagious.
Gas prices are climbing again, and Colorado drivers are feeling it. As the conflict in Iran intensifies, crude oil prices have spiked to their highest level in more than a year.
An Aurora restaurant paid a fine after an investigation found a teen employee was allowed to load a trash compactor — a federally prohibited hazardous task for a minor — and some employees worked longer than federal law allows.
United said it could permanently ban travelers who refuse to wear headphones while listening to audio or video content on its flights.
Tests of dozens of baby formulas by Consumer Reports found that nearly half contained potentially dangerous chemicals.
In an effort to encourage more young skiers and snowboarders, Vail Resorts is offering a special rate for Epic and EpicLocal Passes for the 2026-2027 season.
A Colorado family is calling for change and sharing their struggle after a clinical trial their son relied on suddenly ended.
The case of a police officer who allegedly fled after off-duty road rage incident that ended in crash on I-25 is highlighting the hiring pressures small departments in Colorado face.
A popular youth hockey coach in southern Colorado has been arrested for investigation of felony child abuse after colliding on the ice with one of his players in a case that one of the coach's supporters called a "terrifying precedent for youth sports across the country."
A Denver judge this week ordered an area pastor, Tilo Lopez, to pay a family $311,000 in restitution after Lopez was criminally prosecuted in connection with a construction project he said he would do for the family.
The filing comes months after a judge ordered the company to pay more than $116 million for its role in the 2021 death of 6-year-old Wongel Estifanos.