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.
More than 200 soldiers with the Colorado Army National Guard's 1st Battalion, 157th Infantry Regiment are preparing to deploy to the Middle East, marking a significant mission that will take them away from their families for nearly a year.
The Colorado Auto Show is the place to dream big, and then look, touch, and sit behind the wheel of some of the coolest cars ever made.
Picture "Hamlet" set at a Southern barbeque where a Black family has gathered for a celebration, that is "Fat Ham."
David McWilliams had been wanted by law enforcement since May 2025, when he allegedly struck a bicyclist, causing serious injuries, and then fled. At the time, police said he should be considered armed and dangerous.
Officials from 23 states and the District of Columbia filed a lawsuit seeking to block President Trump's executive order that aims to restrict mail voting.
More than 200 soldiers with the Colorado Army National Guard's 1st Battalion, 157th Infantry Regiment are preparing to deploy to the Middle East, marking a significant mission that will take them away from their families for nearly a year.
Colorado is among the states seeking to block the president's executive order that aims to restrict mail voting.
The Colorado Auto Show is the place to dream big, and then look, touch, and sit behind the wheel of some of the coolest cars ever made.
Picture "Hamlet" set at a Southern barbeque where a Black family has gathered for a celebration, that is "Fat Ham."
David McWilliams had been wanted by law enforcement since May 2025, when he allegedly struck a bicyclist, causing serious injuries, and then fled. At the time, police said he should be considered armed and dangerous.
In this week’s Your Local Dish, CBS Colorado First at 4 Anchor Mekialaya White and restaurant promoter Larry Herz enjoy the vibe at Odie B's.
As a preview of A Day for Wednesday's Child, Tiana Kennedy spoke with CBS Colorado's Mekialaya White about Raise the Future's efforts to help children in Colorado who are in foster care.
Picture "Hamlet" set at a Southern barbeque where a Black family has gathered for a celebration, that is "Fat Ham."
Spend any time with Randy Milliken and most likely he'll talk baseball, and more notably, his love for the Colorado Rockies.
Fans are hopeful that the Rockies will have a better season than they've had over the past few years.
Despite needing help with his motor skills and movement, it hasn't stopped Randy Milliken from loving his favorite team.
With only a few hours left until the big game -- the Colorado Rockies home opener at Coors Field in Denver -- CBS Colorado was keeping an eye on Ticketmaster for baseball fans who are looking to still purchase a ticket.
Fans heading to Coors Field in Denver this season can expect more than baseball.
Body camera video has been released of Tiger Woods' arrest, after a car crash in Florida. He has been charged with driving under the influence.
Nathan MacKinnon is the first to 50 goals in the NHL this season!
Officials from 23 states and the District of Columbia filed a lawsuit seeking to block President Trump's executive order that aims to restrict mail voting.
Alan Hayward James, 51, pleaded guilty to conspiracy to commit wire fraud, bribery, and conspiracy to rig bids.
Supreme Court Justice Samuel Alito was treated for dehydration after falling ill at an event in Philadelphia on March 20, the court's public information office said.
The search for the second crew member, a weapons system officer, is continuing, two U.S. officials said.
The photo shows the entire planet, as well as the Northern and Southern lights.
Officials from 23 states and the District of Columbia filed a lawsuit seeking to block President Trump's executive order that aims to restrict mail voting.
Supreme Court Justice Samuel Alito was treated for dehydration after falling ill at an event in Philadelphia on March 20, the court's public information office said.
The search for the second crew member, a weapons system officer, is continuing, two U.S. officials said.
A key senator is demanding the TSA reverse its decision to let travelers keep their shoes on while passing through airport screening, a controversial policy at the center of a classified security warning.
The Secretary of the Interior was in Northern Colorado to learn about our water supply, wildfire preparedness, and how he might help.
The Environmental Protection Agency also added microplastics to its contaminant candidate list for the first time.
The COVID-19 variant BA.3.2, nicknamed "Cicada," has been detected in at least 23 countries and half the states in the U.S.
About half a million people in Colorado are living with a brain injury and many of them don't know it.
The One Big Beautiful Bill Act will add red tape and restrictions for those seeking Medicaid and SNAP benefits. And the costs to update computer systems that determine eligibility for those programs will be steep.
A record warm winter, combined with dry conditions across Colorado, has created the perfect conditions for allergy season to start early.
The Colorado Auto Show is the place to dream big, and then look, touch, and sit behind the wheel of some of the coolest cars ever made.
The eye drops — sold under multiple brands — have been recalled over concerns about sterility, according to the FDA.
Hiring was much stronger than expected in March, with employers adding roughly three times the number of jobs economists predicted.
Rising fertilizer prices cost farmers more in a year hit hard by dry conditions, and with the potential for some farmers to get reductions in their irrigation water allotments.
With gasoline topping $4 a gallon, it now costs almost $145 to fill up a Ford F-150 pickup truck, a new analysis finds.
CBS Colorado is investigating a trucking company involved in a crash at a gas station in the southern part of the Denver metro area in March.
A Denver jury has found activist Regan Benson, a frequent critic of police, guilty of "doxing" a Denver police commander during a livestream last September, in what appears to be the first conviction under Colorado's anti-doxing law.
Fire chiefs in two departments northwest of Denver, Westminster and Arvada, say gaps in emergency dispatch technology between neighboring departments can slow response times and, in some cases, limit how quickly help arrives.
A state investigation has found that a Denver assisted living facility took 13 minutes to locate a resident who collapsed and begin CPR -- failures regulators say placed all 125 residents in "immediate jeopardy."
Colorado's youth detention facilities are at the center of a civil rights lawsuit alleging that children are being kept beyond their court-ordered release dates. Advocates and families say the impact is irreversible.