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College of Charleston Professor Discovers New Species of – GlobeNewswire

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CHARLESTON, S.C., March 01, 2022 (GLOBE NEWSWIRE) — Of all the scientific names that have been given to our planet’s species, “Tyrannosaurus rex” may be the most famous. Which name do more kids recognize, the king of the dinosaurs or that of our own species: Homo sapiens? The dinosaur, of course.

Paleontologists have been digging away and identifying skeletons as T. rex for more than 120 years. In a new study published in the scientific journal Evolutionary Biology, researchers have sifted through all of those skeletons and reconsidered what it means to be T. rex. The study puts forward the new hypothesis that, while all those bones do belong to “Tyrannosaurus,” they may not all be “rex.”

“The name Tyrannosaurus rex, or T. rex for short, has two parts,” says Scott Persons, a College of Charleston geology professor and an author of the new study, explaining that “Tyrannosaurus – that’s the ‘T.’ – is the name of the genus. The ‘rex’ identifies a species within that genus. Normally, it’s a dinosaur’s genus name that everybody knows: Triceratops, Stegosaurus, Velociraptor. T. rex is an exception. We all know the full name, genus and species. Maybe that’s because the species name is short and sweet; maybe it’s because the full name is so evocative and just plain fun to say.

“It’s a cool name – it has what I’d call rex appeal,” continues Persons. “But maybe not every Tyrannosaurus deserved that rexy name. Within a genus there are usually multiple species that vary from one another. We Homo sapiens share our genus with many hominid relatives – like Homo neanderthalensis, Homo erectus and Homo habilis – but there has only ever been one recognized species of Tyrannosaurus.”

In the past, other paleontologists have been suspicious of variability among Tyrannosaurus skeletons – like how some Tyrannosaurus have two sets of front teeth in their lower jaws with a chisel-like shape, while others have only one set. Other paleontologists have thought something funny is going on with the overall bulkiness of Tyrannosaurus bones. Some skeletons are extra lean, while others are much burlier.

Persons and the study’s lead author Greg Paul amassed a dataset of skeletal measurements from all available Tyrannosaurus specimens. To help sort out this data, Persons recruited College of Charleston National Merit Scholar and alumna Jay Van Raalte ’20.

Winner of the College’s top mathematics honor, the Ewa Wojcicka Award, Van Raalte is a mathematical prodigy who got to work crunching numbers and helping to analyze the data statistically.

To confirm that something unusual was going on with Tyrannosaurus, the team compared the variability of the data to that of another large carnivorous dinosaur: Allosaurus fragilis. Unlike the Tyrannosaurus data, which came from fossil sites scattered across the continent, the 14 Allosaurus fragilis skeletons all came from a single spot: the Cleveland-Lloyd Dinosaur Quarry in Utah. Being from one spot at one point in time, the Allosaurus skeletons are assumed to be one species. Sure enough, the Allosaurus data were far less variable, indicating the differences in heft observed in Tyrannosaurus were beyond what should be expected in just one species.

When the team went on to compare the skeletal proportions of Tyrannosaurus with those of its closest relatives (other two-fingered tyrannosaurids like Albertosaurus, Daspletosaurus and Tarbosaurus), the Tyrannosaurus data still came out as unusually variable. But there was another big surprise.

“For about half the specimens,” Persons says, “the proportions are far more gracile [skinny] than what you would expect for a tyrannosaurid or other carnivorous dinosaur of that size. That confused the heck out of me. Tyrannosaurus is the biggest of the tyrannosaurids, so you’d think it would be the most robust.”

As animals get bigger, their bones have to support more weight and endure the forces imposed by their heavy bodies while moving. But, big heavy animals tend to be slower, making it harder to chase and capture prey.

“Instead of adapting their bodies to deal with the greater physical constraints, it’s as though the animals were adapting to deal with greater ecological constraints,” says Persons. “Rather than compensate for the greater risks and strains of growing big, the gracile Tyrannosaurus has a leaner frame that may have helped it maintain athletic performance even at large size.”

Finally, the team divided all the Tyrannosaurus specimens up based on time. A few patterns emerged. No gracile Tyrannosaurus skeletons were known from older, lower rocks layers, and neither were specimens with just one chisel-like tooth set. All the gracile specimens were from a younger point in time and also had a single set of chisel-like teeth. This, the researchers argue, suggests that the burlier and double chisel-toothed form found in the older layers was one species that gave rise to another.

Some new names were in order.

The young gracile descendants have been dubbed Tyrannosaurus regina (meaning “tyrant lizard queen”), and, continuing the royal theme, the ancestral species has been christened Tyrannosaurus imperator (meaning “tyrant lizard emperor”).

But what about Tyrannosaurus rex? Well, the gracile T. regina was not the only Tyrannosaurus of its time. Also found in the younger rocks were burly specimens, but unlike the older T. imperator, they all also bear only one chisel-like tooth set. It is to this third group that the first-discovered skeleton named Tyrannosaurus rex belongs.

The Tyrannosaurus fossil record spans badlands across North America and over 1.5 million years.

“From an evolutionary perspective, that’s a long time for one species of large, warm-blooded predator to remain unchanged,” says Persons. “Natural selection often leads to expanding diversity. Today, lions and leopards are two species of the same genus that live together, as are grizzly bears and black bears. I think it’s unlikely that all our Tyrannosaurus specimens represent a single species. The challenge is trying to tell them apart.”

Will the new research lead museum curators to rush out and re-label their skeletons? Persons doubts it, at least in the short term.

“In paleontology, all species names represent hypotheses,” he says. “After all, no amount of romantic lighting or Barry White will reveal to you which Tyrannosaurus fossils could mate and yield fertile offspring. But, like any good scientific hypothesis, ours can be tested. As new Tyrannosaurus skeletons are found, we can check if they fit or defy the three proposed species and associated traits. That will make the next discovered Tyrannosaurus skeleton all the more exciting.”

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Here’s how Helene and other storms dumped a whopping 40 trillion gallons of rain on the South

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More than 40 trillion gallons of rain drenched the Southeast United States in the last week from Hurricane Helene and a run-of-the-mill rainstorm that sloshed in ahead of it — an unheard of amount of water that has stunned experts.

That’s enough to fill the Dallas Cowboys’ stadium 51,000 times, or Lake Tahoe just once. If it was concentrated just on the state of North Carolina that much water would be 3.5 feet deep (more than 1 meter). It’s enough to fill more than 60 million Olympic-size swimming pools.

“That’s an astronomical amount of precipitation,” said Ed Clark, head of the National Oceanic and Atmospheric Administration’s National Water Center in Tuscaloosa, Alabama. “I have not seen something in my 25 years of working at the weather service that is this geographically large of an extent and the sheer volume of water that fell from the sky.”

The flood damage from the rain is apocalyptic, meteorologists said. More than 100 people are dead, according to officials.

Private meteorologist Ryan Maue, a former NOAA chief scientist, calculated the amount of rain, using precipitation measurements made in 2.5-mile-by-2.5 mile grids as measured by satellites and ground observations. He came up with 40 trillion gallons through Sunday for the eastern United States, with 20 trillion gallons of that hitting just Georgia, Tennessee, the Carolinas and Florida from Hurricane Helene.

Clark did the calculations independently and said the 40 trillion gallon figure (151 trillion liters) is about right and, if anything, conservative. Maue said maybe 1 to 2 trillion more gallons of rain had fallen, much if it in Virginia, since his calculations.

Clark, who spends much of his work on issues of shrinking western water supplies, said to put the amount of rain in perspective, it’s more than twice the combined amount of water stored by two key Colorado River basin reservoirs: Lake Powell and Lake Mead.

Several meteorologists said this was a combination of two, maybe three storm systems. Before Helene struck, rain had fallen heavily for days because a low pressure system had “cut off” from the jet stream — which moves weather systems along west to east — and stalled over the Southeast. That funneled plenty of warm water from the Gulf of Mexico. And a storm that fell just short of named status parked along North Carolina’s Atlantic coast, dumping as much as 20 inches of rain, said North Carolina state climatologist Kathie Dello.

Then add Helene, one of the largest storms in the last couple decades and one that held plenty of rain because it was young and moved fast before it hit the Appalachians, said University of Albany hurricane expert Kristen Corbosiero.

“It was not just a perfect storm, but it was a combination of multiple storms that that led to the enormous amount of rain,” Maue said. “That collected at high elevation, we’re talking 3,000 to 6000 feet. And when you drop trillions of gallons on a mountain, that has to go down.”

The fact that these storms hit the mountains made everything worse, and not just because of runoff. The interaction between the mountains and the storm systems wrings more moisture out of the air, Clark, Maue and Corbosiero said.

North Carolina weather officials said their top measurement total was 31.33 inches in the tiny town of Busick. Mount Mitchell also got more than 2 feet of rainfall.

Before 2017’s Hurricane Harvey, “I said to our colleagues, you know, I never thought in my career that we would measure rainfall in feet,” Clark said. “And after Harvey, Florence, the more isolated events in eastern Kentucky, portions of South Dakota. We’re seeing events year in and year out where we are measuring rainfall in feet.”

Storms are getting wetter as the climate change s, said Corbosiero and Dello. A basic law of physics says the air holds nearly 4% more moisture for every degree Fahrenheit warmer (7% for every degree Celsius) and the world has warmed more than 2 degrees (1.2 degrees Celsius) since pre-industrial times.

Corbosiero said meteorologists are vigorously debating how much of Helene is due to worsening climate change and how much is random.

For Dello, the “fingerprints of climate change” were clear.

“We’ve seen tropical storm impacts in western North Carolina. But these storms are wetter and these storms are warmer. And there would have been a time when a tropical storm would have been heading toward North Carolina and would have caused some rain and some damage, but not apocalyptic destruction. ”

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Follow AP’s climate coverage at https://apnews.com/hub/climate

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Follow Seth Borenstein on Twitter at @borenbears

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Associated Press climate and environmental coverage receives support from several private foundations. See more about AP’s climate initiative here. The AP is solely responsible for all content.

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‘Big Sam’: Paleontologists unearth giant skull of Pachyrhinosaurus in Alberta

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It’s a dinosaur that roamed Alberta’s badlands more than 70 million years ago, sporting a big, bumpy, bony head the size of a baby elephant.

On Wednesday, paleontologists near Grande Prairie pulled its 272-kilogram skull from the ground.

They call it “Big Sam.”

The adult Pachyrhinosaurus is the second plant-eating dinosaur to be unearthed from a dense bonebed belonging to a herd that died together on the edge of a valley that now sits 450 kilometres northwest of Edmonton.

It didn’t die alone.

“We have hundreds of juvenile bones in the bonebed, so we know that there are many babies and some adults among all of the big adults,” Emily Bamforth, a paleontologist with the nearby Philip J. Currie Dinosaur Museum, said in an interview on the way to the dig site.

She described the horned Pachyrhinosaurus as “the smaller, older cousin of the triceratops.”

“This species of dinosaur is endemic to the Grand Prairie area, so it’s found here and nowhere else in the world. They are … kind of about the size of an Indian elephant and a rhino,” she added.

The head alone, she said, is about the size of a baby elephant.

The discovery was a long time coming.

The bonebed was first discovered by a high school teacher out for a walk about 50 years ago. It took the teacher a decade to get anyone from southern Alberta to come to take a look.

“At the time, sort of in the ’70s and ’80s, paleontology in northern Alberta was virtually unknown,” said Bamforth.

When paleontogists eventually got to the site, Bamforth said, they learned “it’s actually one of the densest dinosaur bonebeds in North America.”

“It contains about 100 to 300 bones per square metre,” she said.

Paleontologists have been at the site sporadically ever since, combing through bones belonging to turtles, dinosaurs and lizards. Sixteen years ago, they discovered a large skull of an approximately 30-year-old Pachyrhinosaurus, which is now at the museum.

About a year ago, they found the second adult: Big Sam.

Bamforth said both dinosaurs are believed to have been the elders in the herd.

“Their distinguishing feature is that, instead of having a horn on their nose like a triceratops, they had this big, bony bump called a boss. And they have big, bony bumps over their eyes as well,” she said.

“It makes them look a little strange. It’s the one dinosaur that if you find it, it’s the only possible thing it can be.”

The genders of the two adults are unknown.

Bamforth said the extraction was difficult because Big Sam was intertwined in a cluster of about 300 other bones.

The skull was found upside down, “as if the animal was lying on its back,” but was well preserved, she said.

She said the excavation process involved putting plaster on the skull and wooden planks around if for stability. From there, it was lifted out — very carefully — with a crane, and was to be shipped on a trolley to the museum for study.

“I have extracted skulls in the past. This is probably the biggest one I’ve ever done though,” said Bamforth.

“It’s pretty exciting.”

This report by The Canadian Press was first published Sept. 25, 2024.

The Canadian Press. All rights reserved.

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The ancient jar smashed by a 4-year-old is back on display at an Israeli museum after repair

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TEL AVIV, Israel (AP) — A rare Bronze-Era jar accidentally smashed by a 4-year-old visiting a museum was back on display Wednesday after restoration experts were able to carefully piece the artifact back together.

Last month, a family from northern Israel was visiting the museum when their youngest son tipped over the jar, which smashed into pieces.

Alex Geller, the boy’s father, said his son — the youngest of three — is exceptionally curious, and that the moment he heard the crash, “please let that not be my child” was the first thought that raced through his head.

The jar has been on display at the Hecht Museum in Haifa for 35 years. It was one of the only containers of its size and from that period still complete when it was discovered.

The Bronze Age jar is one of many artifacts exhibited out in the open, part of the Hecht Museum’s vision of letting visitors explore history without glass barriers, said Inbal Rivlin, the director of the museum, which is associated with Haifa University in northern Israel.

It was likely used to hold wine or oil, and dates back to between 2200 and 1500 B.C.

Rivlin and the museum decided to turn the moment, which captured international attention, into a teaching moment, inviting the Geller family back for a special visit and hands-on activity to illustrate the restoration process.

Rivlin added that the incident provided a welcome distraction from the ongoing war in Gaza. “Well, he’s just a kid. So I think that somehow it touches the heart of the people in Israel and around the world,“ said Rivlin.

Roee Shafir, a restoration expert at the museum, said the repairs would be fairly simple, as the pieces were from a single, complete jar. Archaeologists often face the more daunting task of sifting through piles of shards from multiple objects and trying to piece them together.

Experts used 3D technology, hi-resolution videos, and special glue to painstakingly reconstruct the large jar.

Less than two weeks after it broke, the jar went back on display at the museum. The gluing process left small hairline cracks, and a few pieces are missing, but the jar’s impressive size remains.

The only noticeable difference in the exhibit was a new sign reading “please don’t touch.”

The Canadian Press. All rights reserved.

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