Wyoming
Scientists Keep Location Of Prehistoric Squid Found In Eastern Wyoming A Secret
The Tate Geological Museum at Casper College is showcasing a first-of-its-kind fossil from Niobrara County.
The 2-foot-long bladed structure belonged to one of Wyoming’s extremely elusive giant squids.
According to J.P. Cavigelli, the museum’s collections specialist, this “big chunk of calamari” has tentatively been identified as part of the internal shell of a Niobrarateuthis, a giant squid that lived in Wyoming’s last ocean around 80 million years ago.
“We found it last year,” he said. “If I told you any more, I’d have to kill you and all your readers.”
Cavigelli is very protective of this squid and the spot where it was found because it’s a rare and unique find for Wyoming.
There could be more giant squid and other prehistoric monsters of the deep waiting to be found there.
“It’s the last time the ocean was here, according to traditional dogma,” he said.
Monster Of The Not Too Deep
The fossil recovered by the Tate is a partial gladius, the hard bone-like structure inside the otherwise soft bodies of squid.
It’s the same as a cuttlebone in a cuttlefish, itself a modern relative of this prehistoric squid.
“We call it the squid pen,” Cavigelli said. “It’s not bone, but I guess you could call it a skeleton, of some sort.”
Cavigelli said this giant squid was found in the Sharon Springs member of the Pierre Shale, a rock layer from the Late Cretaceous Period.
It preserves the inhabitants of the Western Interior Seaway, an inland sea that stretched from the Gulf of Mexico to the Arctic Ocean.
“It’s a black shale from the bottom of the ocean that split North America in half,” he said. “It wasn’t a very deep ocean but pretty expansive.”
The prehistoric squid pen is incomplete, but still over two feet long. That’s enough to quantify it as a truly giant squid.
“We saw (a squid pen) in a North Dakota museum that was five or six feet long and really thick, which would have been a really big animal,” Cavigelli said. “Ours is large, so still from a big animal, but not that huge.”
How big? It’s hard to say.
Paleontologists believe Niobrarateuthis and contemporaneous cephalopods could grow up to 10 feet long, and possibly much larger depending on the length of their tentacles.
“They could have been long or very short,” he said. “All we know is that it was much bigger than your average squid.”
Secretive Squids
Modern-day scientists are struggling to learn much about today’s giant squids. Paleontologists have an even harder time trying to understand prehistoric giant squids, especially given the rarity of their fossils.
Not much is known about North America’s prehistoric giant squids.
Just like today’s squid and octopuses, most of their bodies were composed of soft tissue rather than hard parts, meaning they usually decomposed before they could be buried and fossilized.
Did Niobrarateuthis have long, terrifying tentacles like the modern-day colossal squid, or several smaller tentacles like today’s cuttlefish and Humboldt squid?
According to Cavigelli, either is possible.
“We don’t know enough about it to give it long tentacles,” he said. “I’m sure it had tentacles, because all squids do, but we wouldn’t be able to say how long they were, because that’s quite variable in squids.”
A squid might not even be the best modern analogy for Niobrarateuthis.
Although they outwardly resembled squids, paleontologists believe the Pierre Shale’s cephalopods are more closely related to modern-day octopuses.
The Tate’s fossilized gladius came from the back end of the giant squid. In life, the gladius was surrounded by a large, fleshy mass containing all the internal organs called the mantle.
A giant, squishy squid would have been appetizing dinner option for many of Wyoming’s sea monsters.

It’s What’s For Dinner
From what paleontologists can determine, Niobrarateuthis and the giant squids of the Western Interior Seaway would have had a healthy seafood diet of everything from plants and algae to crabs, fish, and each other.
They would have processed this varied diet with an extremely strong beak, the only other hard part in modern and prehistoric cephalopods.
Meanwhile, even a fully-grown, 10-foot-long giant squid might not have been big enough to stay off the menu of the Western Interior Seaway’s biggest sea monsters.
Giant marine reptiles were at the top of the Pierre Shale’s food chain. One of the largest of these, the mosasaur Tylosaurus, might have grown over 50 feet long, with a 5.6-foot skull.
With such a big head, full of dozens of serrated teeth, a Niobrarateuthis would have made a soft, substantive meal for a fully-grown Tylosaurus. Fortunately, there’s fossilized evidence supporting this predator-prey interaction.
A large squid pen at the Museum of Natural History at the University of Colorado Boulder was found with a huge kink in the middle.
It belonged to Tusoteuthis, another species of giant squid that lived in the Western Interior Seaway.
Multiple grooves found on this Tusoteuthis specimen matched the size and shape of mosasaur teeth. That suggests the giant squid might have survived a failed predation attempt by a large Tylosaurus.
Cephalopods of all sizes were extremely abundant in prehistoric seas.
Smaller squid pens are among the most common fossils found in many marine deposits from the Mesozoic Era and often turn up in the stomachs of marine reptiles.
“I think mosasaurs would have had a great time with them,” Cavigelli said.
Searching for Sea Monsters
Niobrarateuthis and the other denizens of the Pierre Shale went extinct when the Western Interior Seaway disappeared.
The Tate’s Niobrarateuthis gladius was prepared by fossil preparator Bryan Aivazian. It’s currently on display in the museum’s lobby.
Cavigelli said giant squid fossils are an incredible find anywhere in Wyoming.
In addition to their inherent rarity, there aren’t many spots in the state where the Sharon Springs member of the Pierre Shale is exposed and accessible.
“You can find fossils in it, but there aren’t many spots where you’d expect to find these things, and the preservation is typically pretty lousy,” he said.
Other rare specimens from Wyoming’s Pierre Shale exposures include the huge-eyed Unktaheela and the long-snouted Serpentisuchops.
These are both polycotylid plesiosaurs, a family of marine reptiles that probably would have enjoyed feeding on Niobrarateuthis while the giant squid was young and bite-sized.
Notable specimens from the same formation include the 15-foot-long, three-ton sea turtle Archelon, the 34-foot-long plesiosaur Elasmosaurus, 20-foot-long cannibalistic fish, and the famous flying reptile Pteranodon.
The Tate’s squid pen was found during a field trip for participants of the museum’s annual paleontological conference in May 2025.
That’s why Cavigelli will continue to be excited and secretive about the spot where this squid surfaced.
“We collected the squid and the first Cretaceous marine bird bones from Wyoming in about three hours on the same trip,” he said. “I’d say it was a pretty good field trip.”
Andrew Rossi can be reached at arossi@cowboystatedaily.com.
Wyoming
American Rare Earths strengthens board with veteran Wyoming mine builder ahead of planned Nasdaq listing
Veteran mine builder Matthew Gili will join American Rare Earths Ltd (ASX:ARR, OTCQX:ARRNF)’s board as a non-executive director as the company advances the Halleck Creek Rare Earths Project in Wyoming and prepares for a planned Nasdaq compliance listing in H2 2026.
Gili is currently president and CEO of Ur-Energy Inc, a NYSE American and TSX-listed Wyoming uranium producer, and brings more than 25 years of mine development and operational experience across major global mining groups including Rio Tinto and Barrick.
His appointment remains subject to completion of Australian regulatory formalities, which American Rare Earths expects to be completed shortly.
Once formally appointed, Gili will join the company’s Technical Committee and contribute to the Definitive Feasibility Study workstream at Halleck Creek, which American Rare Earths describes as the largest known rare earth deposit in the United States on a total rare earth oxide basis.
Board renewal ahead of US listing plans
The appointment forms part of a broader board renewal process as ARR works toward a Nasdaq compliance dual-listing in H2 2026, while retaining the ASX as its primary listing.
The company is also considering a full US domicile in 2027, subject to a prospective shareholder vote.
CEO Mark Wall said Gili’s operational experience and Wyoming background would strengthen the board as Halleck Creek moves toward construction and production.
“The intended addition of Matt to our Board of Directors further demonstrates our commitment to advancing the largest rare earth element deposit on a total contained rare earths basis in the United States toward construction and operations. Matt brings a tremendous blend of mining technical expertise and Wyoming-specific experience to both the Board and the Technical Committee. His depth of operational knowledge, his relationships in Wyoming, and his proven track record of delivering world-class mining projects, including building the first new copper mine in the United States in a decade, make him exactly the right person to help us get Halleck Creek built.
“As we progress toward our NASDAQ listing later this year, appointments of this calibre send a clear message to U.S. investors about the quality of the team and the seriousness of our intent. Matt’s experience managing ISR uranium operations in Wyoming gives him first-hand knowledge of the hydrometallurgical processing chemistry that will be central to bringing Halleck Creek into production. The parallels between uranium and rare earth processing are substantial and practically meaningful. This is not simply a credential; it is operational expertise that will directly benefit our Technical Committee and Feasibility Study.”
Wyoming
Feds advance permit for controversial Seminoe pumped-water project in Wyoming
by Dustin Bleizeffer, WyoFile
The Seminoe pumped-water storage hydroelectric project in Carbon County advanced toward final approval this month, when the Federal Energy Regulatory Commission issued its environmental impact statement, leaving critics warning of potential fish kills and other risks to wildlife.
Though the newest plan to minimize myriad impacts to fisheries, wildlife and local recreation economies makes concessions “around the margins,” project skeptics say the FERC ignored calls — including from local and state elected officials — to make more meaningful changes regarding threats, including to a “blue ribbon” trout fishery and a vital bighorn sheep herd.
“I’m very disheartened by the final EIS,” Trout Unlimited’s Wyoming Government Relations Director Patrick Harrington told WyoFile.
The plan still doesn’t mandate operational responses that would effectively prevent a trout kill in the prized Miracle Mile of the North Platte River immediately downstream of Seminoe Reservoir due to the threat of rising water temperatures, Harrington said. Trout are a cold-water species and particularly sensitive to warmer temperatures. Groups like Trout Unlimited and Friends of the North Platte have warned that even one day of higher-than-tolerable water temperatures could result in a devastating fish kill.
The potential for a Miracle Mile fish kill still exists, Harrington said, because FERC declined to update its water forecast modeling to include more recent climate-change analysis that shows higher temperatures and lower annual snowpack for cold water runoff. That leaves the protocol to respond to rising water temperatures woefully inadequate.
“It still leaves serious risk to fisheries — and those go back to our concerns over the data that informs the [water quality] model,” Harrington said.
The revised plan also retains multiple waivers to bypass seasonal construction limitations designed to protect wildlife, including the Ferris-Seminoe bighorn sheep herd. Developer rPlus Hydro says the waivers are vital to the economic feasibility for what it hopes will be a five-year construction period. Complying with the slate of seasonal wildlife restrictions will add major cost, the company has testified.
“These [wildlife timing restrictions] did not come as a surprise to them,” Wyoming Wild Sheep Foundation Executive Director Katie Cheesbrough said, adding that granting waivers of science-backed protections would set a dangerous precedent for other industrial projects in the state. “Those wildlife restrictions were publicly available, and they knew that going into it. If it was going to make the project cost-prohibitive, then they shouldn’t do the project. It’s not on Wyoming to ensure that [wildlife protections] are within their cost range.”
rPlus Hydro responds
The Utah-based company proposes building a 13,400-acre-foot reservoir in the Bennett Mountains overlooking Seminoe Reservoir near the dam — one of several reservoirs on the North Platte River. The $4 billion facility would pump water uphill during daytime “off-peak demand” hours for electricity when wind and solar power are plentiful and wholesale electricity is cheapest, according to rPlus Hydro.
“Think of it as a ‘water battery’ that stores energy generated when demand is low,” the company told WyoFile. “When demand increases, water is released from the upper reservoir back into Seminoe, driving hydroelectric turbines to produce electricity.”
Skeptics in Wyoming have cast doubt on the necessity and consumer benefit of the electrical generation daily balance strategy.

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For its part, the company contends that the Seminoe pumped-water storage project represents a $200 million annual savings to ratepayers. A company representative also told WyoFile the FERC’s final EIS “confirms the project is needed for future energy growth and reliability while also safeguarding both the North Platte River and bighorn sheep.”
rPlus Hydro Deputy General Counsel Kevin Baker pointed to the fact that the Wyoming Department of Quality granted a “section 401” water quality certificate for the project earlier this year. The state certificate is proof that “the project will not harm downstream waters, including the Miracle Mile, so drinking water, fishing and recreation remain protected,” Baker wrote.
“The state’s conclusion is backed by a robust, state-led Water Quality Adaptive Management Plan which provides real-time monitoring and strong enforcement measures designed to identify and correct any potential issues before they develop.”
The Environmental Protection Agency agreed with Wyoming DEQ’s findings and stipulations, Baker added.
But there remain huge holes in the modeling — rooted in the failure to consider a changing climate — that FERC, DEQ and the EPA have based their analysis on, Harrington contends. “It’s a castle made of sand.”

Regarding wildlife, and the Ferris-Seminoe bighorn sheep herd in particular, rPlus Hydro contends it is committed to “strict construction practices to minimize disturbance and significant investment in habitat and herd management to ensure its continued health and viability.”
But those promises are not enshrined in FERC’s stipulations for the project, said Cheesbrough of the Wyoming Wild Sheep Foundation.
There’s no way, she said, to ensure the bighorn sheep herd, and other wildlife, will be protected due to the multiple waivers FERC wants to allow for seasonal restrictions. Understandably, Cheesbrough noted, the restrictions for bighorn sheep, sage grouse, raptors and other wildlife would black out much of the calendar, limiting when construction could take place.
Protecting wildlife, Cheesbrough said, would likely add several years and dramatically increase the project’s cost. But, she added, “For them to be like, ‘Well, we just can’t afford to do it here if we have to abide by all of this,’ and then asking for waivers, it seems like a very dangerous precedent to set.”
Public and government pushback
The FERC is the primary permitting agency for the project because of its reliance on federally managed water-storage reservoirs, hydroelectric and electrical transmission systems. It’s a source of heartburn for locals, Harrington said, because the agency seems less beholden to public and local government input compared to other federal agencies.
“It’s frustrating,” Harrington said. “I think this project is headed toward licensing in September because the adjustments FERC has made have sort of just indicated that there’s not going to be a lot of changes to the plan as proposed.”
“For them to be like, ‘Well, we just can’t afford to do it here if we have to abide by all of this,’ and then asking for waivers, it seems like a very dangerous precedent to set.”
Katie Cheesbrough, Wyoming Wild Sheep Foundation
In May, the Legislature’s Travel, Recreation, Wildlife and Cultural Resources Committee heard a large outcry from wildlife and recreation enthusiasts opposing the project, as well as from local officials from Carbon and Natrona counties.
“These concerns are not theoretical for us,” Casper Mayor Ray Pacheco told the legislative panel. “Casper relies directly on the North Platte River for drinking water, wastewater treatment, recreation, tourism and the quality of life.”
Committee members bristled at what they saw as a severe lack of engagement by rPlus Hydro and FERC with the public and local officials. Committee leaders agreed to send a letter to Wyoming’s congressional delegation, as well as to FERC, imploring officials to insist on meaningful protections.
What’s next?
The FERC has indicated that the publication of the final EIS this month does not trigger a public comment period before giving its final approval later this year. Some governmental agencies, however, still have the power to persuade the FERC, according to WyoFile sources.
So what powers can be exerted on the FERC to change course on the project?
For example, the wildlife waivers and other accommodations in the FERC’s plan do not align with the U.S. Bureau of Land Management’s resource management plan for the region, administered by the BLM’s Rawlins Field Office. If the BLM chooses to accommodate FERC’s plan for the project, it would likely have to amend its resource management plan — a process that is more inclusive of public and local government agencies.
Harrington and Cheesbrough both noted that the Wyoming Game and Fish Department, for example, has refused to endorse a carte blanche waiver of seasonal wildlife restrictions. That could be a major factor if the BLM initiates the process to align its management plan with FERC’s proposed certification of the project.
“To me, that’s a massive hurdle,” Harrington said.
This article was originally published by WyoFile and is republished here with permission. WyoFile is an independent nonprofit news organization focused on Wyoming people, places and policy.
Related
Wyoming
New Department of Family Services summer food program launches in Wyoming
CHEYENNE, Wyo. — The Wyoming Department of Family Services recently announced that it will be launching a federal program this week to provide grocery assistance to more than 37,000 school-aged children across the state.
Known as SUN Bucks, the initiative provides a one-time $120 benefit per eligible child to help families cover food costs during the summer months, the department announced in a release. Gov. Mark Gordon previously authorized the program’s implementation through an executive order on April 15.
Gordon described the initiative as an essential tool to support children who may otherwise lack access to healthy food while school is out of session.
“We want our children to thrive, because when our children are successful, so too are our communities,” he stated in the release.
According to DFS, most qualifying children will be automatically enrolled in the program. The department reports that it began sending eligibility notifications this week via mail and email.
Eligible families can expect to receive SUN Bucks electronic benefit transfer cards in the mail starting in early July.
DFS Director Korin Schmidt said in a statement that the program is specifically designed to assist rural children who lose access to school-provided breakfast and lunch during the summer months, adding that the benefits will allow families to purchase groceries as needed to ensure food is available in the home for those missed meals.
The SUN Bucks cards will function similarly to other benefit programs and be accepted at any retailer participating in the Supplemental Nutrition Assistance Program.
While tens of thousands of children are enrolled automatically, some eligible families may still need to apply, according to the press release. Residents can check their child’s enrollment status or submit an application through the DFS SUN Bucks website starting June 22.
For more information, people can visit the DFS website, email ask-sunbucks@wyo.gov or call 307-777-8786 between 8:15 a.m. and 4:45 p.m. Monday through Friday.
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