Though paleontologists have been discussing the origin and spread of dinosaurs for decades, the widely accepted theory was that they emerged in the southern part of the ancient continent of Pangea over 200 million years ago, and only spread northward millions of years later. A new study dramatically changes the conversation.
University of Wisconsin–Madison (UW–Madison) paleontologists announced the discovery of a new dinosaur that challenges the conventional theory about the dinosaurs’ origin and spread. The location and age of the newly-described fossils suggest that dinosaurs prowled the northern regions of Pangea millions of years earlier than previously hypothesized. The findings were detailed in a January 8 study published in the Zoological Journal of the Linnean Society.
“We’re kind of filling in some of this story, and we’re showing that the ideas that we’ve held for so long — ideas that were supported by the fragmented evidence that we had — weren’t quite right,” Dave Lovelace of the University of Wisconsin Geology Museum, who co-led the study, said in a UW–Madison statement. “We now have this piece of evidence that shows dinosaurs were here in the northern hemisphere much earlier than we thought.”
The paleontologists uncovered the theory-defying fossils in present-day Wyoming in 2013. Due to Earth’s shifting tectonic plates, this region was located near the equator over 200 million years ago on Laurasia, the northern half of Pangea (the southern half was called Gondwana). While the remains were fragmented, the paleontologists were able to attribute the fossils to a new dinosaur species they named Ahvaytum bahndooiveche, which was likely an early sauropod relative. Ahvaytum, however, looked very different from the iconic long-necked herbivores.
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“It was basically the size of a chicken but with a really long tail,” said Lovelace. “We think of dinosaurs as these giant behemoths, but they didn’t start out that way.” The adult specimen was just over a foot tall (30.5 centimeters) and about three feet long (91.4 cm).
Perhaps most shockingly, however, is the age of the fossil. Lovelace and his colleagues used radioisotopic dating (a method for determining the age of materials by measuring radioactive decay) to determine that the rock layers where they’d found the Ahvaytum fossils—and thus roughly the remains themselves—were about 230 million years old. This makes Ahvaytum the oldest known Laurasian dinosaur, and about equivalent in age to the earliest known Gondwanan dinosaurs, according to the study. Dinosaurs first emerged during the Triassic period, around 230 million years ago. This era, which lasted from about 252 to 201 million years ago, saw the rise of the earliest dinos, before they became dominant in the Jurassic period.
“We have, with these fossils, the oldest equatorial dinosaur in the world — it’s also North America’s oldest dinosaur,” Lovelace added. The fact that the oldest known Laurasian dinosaur is about as old as the earliest known Gondwanan dinosaurs consequently challenges the theory that dinosaurs originated in the south of the ancient continent and only spread north millions of years later.
The site of the discovery is within the ancestral lands of the Eastern Shoshone Tribe. As a result, the researchers partnered with tribal members throughout their work, and included Eastern Shoshone elders and middle school students in choosing the new dinosaur’s name. Ahvaytumbahndooiveche roughly translates to “long ago dinosaur” in the Eastern Shoshone language.
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The region also yielded additional finds. The team identified an early dinosaur-like footprint in older rock layers, meaning that dinosaurs or dinosaur-related creatures were calling Laurasia home even before Ahvaytum. The paleontologists also uncovered the fossil of a newly described amphibian, which was also named in the Eastern Shoshone language.
In challenging long-standing theories about how dinosaurs spread across Pangea, the discovery of the chicken-sized Ahvaytum ultimately paints a clearer picture of the creatures that walked the Earth—and where—millions of years before us.
When a clinic closes in Wyoming, it doesn’t just close a door; it can cut off access to care for entire communities.
For many residents, getting to a health care provider already means traveling long distances across multiple counties, and local clinics are often the only nearby option for basic health care. With one Title X Family Planning clinic in western Wyoming now closed, the challenge is becoming even more real for many people.
Reproductive and sexual health care is a key part of overall health, but it’s often one of the first services people lose access to when clinics close. Title X Family Planning is a federal program that helps people get essential preventive care, no matter their income. These clinics offer services like birth control, cancer screenings, STI and HIV testing, and care before pregnancy. They help people stay healthy, catch problems early, and plan for their futures.
The need is real. Wyoming’s Title X Family Planning network remains a critical part of the state’s health care system, helping bridge gaps in both access and affordability. With 9 clinics currently serving communities across the state, these providers cared for nearly 12,000 patients through more than 28,000 visits between 2022 and 2025. For many, these clinics are their only source of care: 49% of patients were uninsured, and nearly half were living at or below the federal poverty level.
In a state where distance and cost can both be barriers, affordable care is essential. About 14.6% of Wyoming women ages 19–44 are uninsured, higher than the national average. Title X clinics help meet this need by offering low- or no-cost care, while also connecting patients to referrals and additional health services when needed, ensuring more individuals can get the care they deserve.
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These clinics are also on the front lines of prevention. In recent years, they delivered more than 3,100 cervical cancer screenings and about 20,000 STI and HIV tests. Services like these support early detection and treatment, helping reduce the need for more serious and costly care down the line.
In rural states like Wyoming, once a clinic closes, it is very hard to bring it back. These clinics are more than buildings; they are part of the local health care system that keeps communities healthy.
The good news is that Title X Family Planning clinics are still open, working every day to serve their communities. The Wyoming Health Council supports this network of clinics and works to ensure that people across the state can access the care they need. Through partnerships, education, and community-based programs, the organization helps connect Wyoming residents to reproductive and sexual health services, no matter where they live.
In a state where distance, cost, and provider shortages all play a role, these clinics, and the work supporting them, are more than just a convenience. They are a lifeline.
To help sustain this work and protect access to care across Wyoming, consider making a donation to the Wyoming Health Council.
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Donation Link: givebutter.com/WYTitleX
Required Federal Funding statement: This project is supported by the Office of Populations Affairs (OPA) and the Office of the Assistant Secretary of Health (OASH) of the U.S. Department of Health and Human Services (HHS) as part of a financial assistance award 1 FPHPA 006541-0-00 totaling $978,380 with 100 percent funded by OPA/OASH/HHS. The contents are those of the author and do not necessarily represent the official views of, nor an endorsement, by OPA/OASH/HHS or the U.S. Government.
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CASPER, Wyo. — The Casper City Council voted Tuesday to approve on first reading a zoning change for a vacant 2.4-acre parcel located at 1530 SE Wyoming Boulevard, transitioning the property from residential to commercial use.
The ordinance reclassifies Lot 4 of the Methodist Church Addition from Residential Estate to General Business. Located between East 15th and East 18th streets, the irregular-shaped property has remained undeveloped since it was first platted in 1984.
While original plans for the subdivision envisioned a church and an associated preschool, Community Development Director Liz Becher reported those projects never materialized.
According to Becher, the applicant sought the rezoning to facilitate the potential installation of a cell tower or an off-premises sign. Under the new C-2 designation, a cell tower up to 130 feet in height is considered a permitted use by right, though any off-premises sign would still require a conditional use permit from the Planning and Zoning Commission. The applicant also owns the adjacent lot to the north, which the city rezoned to general business in 2021.
Becher said the change aligns with the “Employment Mixed Use” classification in the Generation Casper comprehensive land use plan. This designation typically supports civic, institutional and employment spaces.
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Despite the new zoning, the property remains subject to a subdivision agreement that limits traffic access. Entry and exit are restricted to right turns onto or from East 15th Street, and no access is permitted from East 18th Street.
The council will vote on two more readings of the ordinance before it is officially ratified.
SALT LAKE CITY (KUTV) — Two men were detained in Wyoming in connection with a fatal shooting at a downtown Salt Lake hotel that killed one man.
Carlos Chee, 23, and Chino Aguilar, 21, were both wanted for first-degree felony murder after the victim, identified as Christian Lee, 32, was found dead in a room at the Springhill Suites near 600 South and 300 West.
According to warrants issued for their arrest, Chee and Aguilar met with Lee and another woman at the hotel to sell marijuana. During the alleged drug deal, Aguilar allegedly shot and killed Lee after he tried to grab at his gun.
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Investigators said they found Lee dead in the room upon arrival, as well as a single shell casing on the floor and a small amount of marijuana on the television stand.
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The woman told investigators she had met Chee on a dating app and that he agreed to come to the hotel to sell her marijuana. She had been hanging out with him in the room, which Lee rented for her to use, when Lee asked them to leave. Lee was then shot and killed following a brief confrontation.
Chee and Aguilar allegedly fled the scene in a 2013 Toyota Camry with a Texas license plate that was later found outside of Rock Springs, Wyoming just a few hours later.
The two men were taken into custody and detained at the Sweetwater County Sheriff’s Office.
