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Tully monsters haunted Earth’s oceans 300 million years ago and left behind such bizarre fossils that researchers haven’t even agreed on whether these strange creatures had backbones. Now, more than 60 years after the strange creature’s discovery in 1958, a new investigation using 3D lasers finds that the Tully monster was likely an invertebrate, but not everyone is convinced. 

This alien-looking evolutionary oddball ​​— only found in the Mazon Creek fossil beds in Illinois — had a soft body, eyes on stalks, and a claw-like appendage coming out of its face. Other aspects of its anatomy, however, are open to interpretation.

The latest research, published April 16 in the journal Palaeontology (opens in new tab) , is one of a slew of studies attempting to classify the creature.

Most recent Tully monster (Tullimonstrum gregarium) studies argue that it’s either a vertebrate relative of modern cyclostomes (including lampreys and hagfish) in the chordate group or an unknown invertebrate. Now, researchers in Japan think they’ve cracked the case, with the help of a 3D laser scanner.

“We believe that the mystery of it being an invertebrate or vertebrate has been solved,” first author Tomoyuki Mikami (opens in new tab) , a doctoral student at the University of Tokyo and a researcher at the National Museum of Nature and Science in Tokyo, said in a statement (opens in new tab) . “Based on multiple lines of evidence, the vertebrate hypothesis of the Tully monster is untenable.”

Related: Ancient ‘Tully monster’ was a vertebrate, not a spineless blob, study claims 

The researchers scanned more than 150 Tully monster fossils to create color-coded 3D maps of the animal’s anatomical structures. They also X-rayed one well-preserved proboscis — the claw-like appendage — to examine the creature’s teeth.

The results suggested that features previously used to argue Tully monsters are near cyclostomes taxonomically, including their teeth and gill pouches, were misinterpreted. The teeth analyzed in the new study had bulging bases — unlike cyclostome teeth, which are thinner at the base. The authors said what appeared to be gills was actually just segmentation in the body.

Most convincing of all, the team claims, is segmentation found on the creature’s head. “This characteristic is not known in any vertebrate lineage, suggesting a nonvertebrate affinity,” Mikami said. 

Victoria McCoy (opens in new tab) , an assistant professor at the University of Wisconsin-Milwaukee, is not convinced, however. McCoy led a 2016 study placing Tully monsters near cyclosomes and a 2020 study that found Tully monster tissues were made up of proteins (opens in new tab) like those of vertebrates — and not chitin, like those of invertebrates.  

“It didn’t change my mind about what the Tully monster was,” McCoy told Live Science. “But it is new information, and that definitely advances our understanding.” 

McCoy was excited by the researchers’ application of 3D imaging but had “minor technical quibbles with some of their conclusions.” She argued that cyclostomes are very diverse in the fossil record and thus some species could have had the bulging-based teeth documented in the study. She also noted that the anatomy of animals preserved in Mazon Creek separates and shifts, which could account for the appearance of segmentation.RELATED STORIES—Trilobites had a hidden third eye, new fossils reveal

—Oops, this 300 million-year-old ‘blob’ fossil was upside down. It’s not a jellyfish after all.

—Oldest ‘fish-lizard’ fossils ever found suggest these sea monsters survived the ‘Great Dying’

“The real-life morphology gets changed a lot during fossilization,” McCoy said. “If you have a thousand specimens, any one feature might be preserved a hundred different ways.”

Deciding where the Tully monster belongs is significant because the species is so unusual that it will expand the diversity of whatever group it ends up in, changing the way we think about that group.

The latest study also puts forward a potential compromise for the discrepancies: that Tully monsters could possibly be nonvertebrate chordates like modern tunicates or lancelets. For now, however, the Tully monster’s place on the evolutionary tree remains unclear.

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Britain’s winter blackout risk the lowest in six years – but ‘tight’ days expected

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Britain's winter blackout risk the lowest in six years - but 'tight' days expected

Britain is at the lowest risk of a winter power blackout than at any point in the last six years, the national electricity grid operator has said.

Not since the pre-pandemic winter of 2019-2020 has the risk been so low, the National Energy System Operator (NESO) said.

It’s thanks to increased battery capacity to store and deploy excess power from windfarms, and a new subsea electricity cable to Ireland that came on stream in April.

The margins between expected demand and supply are now roughly three gas power stations greater than last year, the NESO said.

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Renewables overtake coal for first time

It also comes as Britain and the world reached new records for green power.

For the first time, renewable energy produced more of the world’s electricity than coal in the first half of 2025, while in Britain, a record 54.5% of power came from renewables like solar and wind energy in the three months to June.

More renewable power can mean lower bills, as there’s less reliance on volatile oil and gas markets, which have remained elevated after the invasion of Ukraine and the Western attempt to wean off Russian fossil fuels.

“Renewables are lowering wholesale electricity prices by up to a quarter”, said Jess Ralston, an energy analyst at the Energy and Climate Intelligence Unit (ECIU) thinktank.

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In a recent winter, British coal plants were fired up to meet capacity constraints when cold weather increased demand, but still weather conditions meant lower supply, as the wind didn’t blow.

Those plants have since been decommissioned.

But it may not be all plain sailing…

There will, however, be some “tight” days, the NESO said.

On such occasions, the NESO will tell electricity suppliers to up their output.

The times Britain is most likely to experience supply constraints are in early December or mid-January, the grid operator said.

The NESO had been owned by National Grid, a public company listed on the New York Stock Exchange, but was acquired by the government for £630m in 2023.

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Man Utd and chemicals boss warns of ‘moment of reckoning’ for his industry

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Man Utd and chemicals boss warns of 'moment of reckoning' for his industry

Sir Jim Ratcliffe, the co-owner of Manchester United and head of Ineos, one of Europe’s largest chemical producers, has staged an “11th-hour intervention” in an effort to “save” the chemical industry.

Sir Jim has called on European legislators to reduce price pressures on chemical businesses, or there “won’t be a chemical industry left to save”.

“There’s, in my view, not a great deal of time left before we see a catastrophic decline in the chemical industry in Europe”, he said.

The “biggest problem” facing businesses is gas and electricity costs, with the EU needing to be “more reactive” on tariffs to protect competition, Sir Jim added.

Prices should be eased on chemical companies by reducing taxes, regulatory burdens, and bringing back free polluting permits, the Ineos chairman and chief executive said.

It comes as his company, Europe’s biggest producer of some chemicals and one of the world’s largest chemical firms, announced the loss of 60 jobs at its acetyls factory in Hull earlier this week.

Cheap imports from China were said to be behind the closure, as international competition facing lower costs has hit the sector.

What could happen?

Now is a “moment of reckoning” for Europe’s chemicals industry, which is “at a tipping point and can only be saved through urgent action”, Sir Jim said.

European chemical sector output declined significantly due to reduced price competitiveness from high energy and regulatory costs, according to research funded by Ineos and carried out by economic advisory firm Oxford Economics.

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The report said the continent’s policymakers face a “critical” decision between acting now to safeguard “this vital strategic industry or risk its irreversible decline”.

As many as 1.2 million people are directly employed by chemical businesses, with millions more supported in the supply chain and through staff spending wages, the Oxford Economics report read.

Average investment by European chemical firms was half that of US counterparts (1.5%, compared to 3%), a trend which is projected to continue, the report added.

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Jays knock out Yankees, reach 1st ALCS since ’16

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Jays knock out Yankees, reach 1st ALCS since '16

NEW YORK — Vladimir Guerrero Jr. and George Springer each drove in a run, and eight Toronto pitchers shut down the New York Yankees in a 5-2 victory Wednesday night that sent the Blue Jays to the American League Championship Series for the first time in nine years.

Nathan Lukes provided a two-run single and Addison Barger had three of Toronto’s 12 hits as the pesky Blue Jays, fouling off tough pitches and consistently putting the ball in play, bounced right back after blowing a five-run lead in Tuesday night’s loss at Yankee Stadium.

AL East champion Toronto took the best-of-five Division Series 3-1 and will host Game 1 in the best-of-seven ALCS on Sunday against the Detroit Tigers or Seattle Mariners.

Those teams are set to decide their playoff series Friday in Game 5 at Seattle.

Ryan McMahon homered for the wild-card Yankees, unable to stave off elimination for a fourth time this postseason as they failed to repeat as AL champions.

Despite a terrific playoff performance from Aaron Judge following his previous October troubles, the 33-year-old star slugger remains without a World Series ring. New York is still chasing its 28th title and first since 2009.

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