Wyoming
230 Million-Year-Old Fossil From Wyoming Challenges Dinosaur Origin Theories
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.
“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. Ahvaytum bahndooiveche roughly translates to “long ago dinosaur” in the Eastern Shoshone language.
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.
CASPER, Wyo. — High school athletics in Wyoming could see some drastic changes in the coming years following legislative changes to the state’s education budget, the Wyoming High School Activities Association recently announced in a statement.
According to the WHSAA, Wyoming school districts are facing a projected $3.9 million shortfall in activities funding, forcing officials to consider significant cuts to high school sports and extracurricular programs.
The WHSAA shared details regarding a new “silo” funding model implemented by the Legislature, stating that the recalibrated block grant model reduced funding for student activities and extra-duty responsibilities from $46.3 million to $42.4 million, an approximately 8.4% decrease statewide.
WHSAA Commissioner Trevor Wilson said the restructuring also restricts district access to an additional $76.2 million in previously flexible funding.
“A significant portion of the [April 28 WHSAA Board of Directors] meeting was dedicated to discussing the projected funding shortfall,” Wilson wrote.
The WHSAA is weighing several strategies to address rising costs with fewer resources. Proposed changes include eliminating regional tournaments and reducing the number of teams qualifying for state events from eight to four; limiting wrestling to two classes and restricting track and field state participants to the top 16 marks; making cuts to soccer, indoor track and field, Nordic and Alpine skiing, swimming and diving, spring golf and tennis; and reducing in-person speech and debate events by half and centrally locating All-State Music events to minimize travel. The board also recommended increasing gate admission or implementing student participation fees to offset costs.
While the WHSAA release states that no plans have been finalized and the various changes are currently just possibilities, Natrona County School District 1 Board of Trustees member Mary Schmidt criticized the WHSAA’s handling of the news at Monday’s board meeting.
“I take some issues with this, [including] the sheer fact that we as Board of Trustees members have not talked about that at all,” Schmidt said. “It is not our intent and it has not been brought to us to cut our athletics or activities budget for the upcoming school year. … I take issue with them picking sports and getting the community upset and ginning them up to be upset that this is all going to be cut when that hasn’t been discussed.”
Later in the meeting, Superintendent Angela Hensley clarified that Natrona County School District 1’s athletics and activities budget saw a reduction of roughly $550,000 in the coming year’s budget, but said the local school district does not plan to cut any sports.
“Thank you, Trustee Schmidt, for saying this, because I think people are wondering — we are not planning to cut athletics and activities for next year,” Hensley said. “We do have to take a look at our entire budget as we have talked about, as we learn more about these new rules that come in.”
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Republished with permission from Wyoming News Now, a TV news outlet covering the Cheyenne and Casper areas.
Cheyenne City Council has introduced a temporary moratorium, or pause, on new data center construction.
“The end goal is to actually have regulations in place, to have really heavy public involvement with this with data centers,” said Councilman Mark Moody.
The proposed ordinance is not a permanent ban on data centers and would not affect data centers currently under construction.
Councilman Moody says this is a bipartisan issue.
“I just want to make this clear, I’m not against data centers. We do need them from a national security perspective,” he said.
He said there needs to be more public input and regulations regarding data centers in Cheyenne.
The ordinance would require city staff to study data center impacts such as electricity usage, electricity tariffs, closed-loop cooling systems, groundwater impacts, agricultural impacts, and land value.
Cheyenne LEADS, the economic development corporation for Cheyenne and Laramie County, reported in November 2025 that there are 12 operational data centers in Wyoming, five under construction and plans for 43 data centers announced across the state.
“There needs to be more public input with this, and also to see how many we can sustain here in this community, cause there are talks of 43, and then another day 70. How many can we sustain here?” said Councilman Moody.
The proposed moratorium will now go to the Public Services Committee on Monday, May 18 at noon in the Municipal Building.
Sheridan will play in the North Regional Tournament at Gillette, while the South Regional Tournament will be played at Rock Springs.
North Regional Tournament at Gillette:
Checking record vs. highest team in the quadrant not involved in the tie, Thunder Basin gets the #1 Northeast seed over Campbell County, because the Lady Bolts went 3-1 vs. Sheridan, whereas the Lady Camels went 2-2.
Friday, May 15th:
(#1 NE) Thunder Basin vs. (#4 NW) Jackson – 11am
(#2 NW) Natrona County vs. (#3 NE) Sheridan – 11am
(#2 NE) Campbell County vs. (#3 NW) Kelly Walsh – 1pm
(#1 NW) Cody vs. (#4 NE) Worland – 1pm
Semi-Finals:
Thunder Basin/Jackson winner vs. Natrona County/Sheridan winner – 3pm Winner qualifies for the state tournament.
Campbell County/Kelly Walsh winner vs. Cody/Worland winner – 5pm Winner qualifies for the state tournament.
Consolation Round:
Thunder Basin/Jackson loser vs. Natrona County/Sheridan loser – 3pm LOSER OUT!
Campbell County/Kelly Walsh loser vs. Cody/Worland loser – 5pm LOSER OUT!
Saturday, May 16th:
TBA vs. TBA – 10am LOSER OUT! Winner qualifies for the state tournament.
TBA vs. TBA – 10am LOSER OUT! Winner qualifies for the state tournament.
2 10am winners vs. each other – 1pm 3rd Place
TBA vs. TBA – 1pm 1st Place
South Regional Tournament at Rock Springs:
Friday, May 15th:
(#1 SW) Laramie vs. (#4 SE) Torrington – 11am
(#2 SE) Cheyenne East vs. (#3 SW) Green River – 11am
(#2 SW) Rock Springs vs. (#3 SE) Wheatland – 1pm
(#1 SE) Cheyenne Central vs. (#4 SW) Cheyenne South – 1pm
Semi-Finals:
Laramie/Torrington winner vs. Cheyenne East/Green River winner – 3pm Winner qualifies for the state tournament.
Rock Springs/Wheatland winner vs. Cheyenne Central/Cheyenne South winner – 5pm Winner qualifies for the state tournament.
Consolation Round:
Laramie/Torrington loser vs. Cheyenne East/Green River loser – 3pm LOSER OUT!
Rock Springs/Wheatland loser vs. Cheyenne Central/Cheyenne South loser – 5pm LOSER OUT!
Saturday, May 16th:
TBA vs. TBA – 10am LOSER OUT! Winner qualifies for the state tournament.
TBA vs. TBA – 10am LOSER OUT! Winner qualifies for the state tournament.
2 10am winners vs. each other – 1pm 3rd Place
TBA vs. TBA – 1pm 1st Place
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