Dinosaur Tail Found in Chile Stuns Scientists

Miniature models of the Stegouros elengassen, a species of dinosaur discovered in Patagonia in 2018, is seen on display December 1, 2021 in Santiago Martin BERNETTI AFP
Miniature models of the Stegouros elengassen, a species of dinosaur discovered in Patagonia in 2018, is seen on display December 1, 2021 in Santiago Martin BERNETTI AFP
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Dinosaur Tail Found in Chile Stuns Scientists

Miniature models of the Stegouros elengassen, a species of dinosaur discovered in Patagonia in 2018, is seen on display December 1, 2021 in Santiago Martin BERNETTI AFP
Miniature models of the Stegouros elengassen, a species of dinosaur discovered in Patagonia in 2018, is seen on display December 1, 2021 in Santiago Martin BERNETTI AFP

Chilean paleontologists on Wednesday presented their findings on a dinosaur discovered three years ago in Patagonia which they said had a highly unusual tail that has stumped researchers

The remains of the Stegouros elengassen were discovered during excavations in 2018 at Cerro Guido, a site known to harbor numerous fossils, by a team who believed they were dealing with an already known species of dinosaur until they examined its tail, AFP reported.

"That was the main surprise,” said Alexander Vargas, one of the paleontologists. “This structure is absolutely amazing."

"The tail was covered with seven pairs of osteoderms ... producing a weapon absolutely different from anything we know in any dinosaur," added the researcher during a presentation of the discovery at the University of Chile.

The osteoderms -- structures of bony plaques located in the dermal layers of the skin - were aligned on either side of the tail, making it resemble a large fern.

Paleontologists have discovered 80 percent of the dinosaur's skeleton and estimate that the animal lived in the area 71 to 74.9 million years ago. It was about two meters (almost seven feet) long, weighed 150 kilograms (330 pounds) and was a herbivore.

According to the scientists, who published their research in the journal Nature, the animal could represent a hitherto unknown lineage of armored dinosaur never seen in the southern hemisphere but already identified in the northern part of the continent.

"We don't know why (the tail) evolved. We do know that within armored dinosaur groups there seems to be a tendency to independently develop different osteoderm-based defense mechanisms," said Sergio Soto, another member of the team.

The Cerro Guido area, in the Las Chinas valley 3,000 km (1,800 miles) south of Santiago, stretches for 15 kilometers. Various rock outcrops contain numerous fossils.

The finds there allowed the scientists to surmise that present-day America and Antarctica were close to each other millions of years ago.

"There is strong evidence that there is a biogeographic link with other parts of the planet, in this case Antarctica and Australia, because we have two armored dinosaurs there closely related" to the Stegouros, said Soto.



Balkans Snowstorm Leaves Tens of Thousands of Homes without Power, Causes Traffic Chaos

An aerial view of parked trolley buses during heavy snowfall in Sarajevo, Bosnia, Tuesday, Dec. 24, 2024. (AP)
An aerial view of parked trolley buses during heavy snowfall in Sarajevo, Bosnia, Tuesday, Dec. 24, 2024. (AP)
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Balkans Snowstorm Leaves Tens of Thousands of Homes without Power, Causes Traffic Chaos

An aerial view of parked trolley buses during heavy snowfall in Sarajevo, Bosnia, Tuesday, Dec. 24, 2024. (AP)
An aerial view of parked trolley buses during heavy snowfall in Sarajevo, Bosnia, Tuesday, Dec. 24, 2024. (AP)

Tens of thousands of homes in Bosnia were without electricity on Tuesday after more heavy snow and winds that also brought traffic chaos in neighboring Croatia and Serbia.

In Slovenia, the resumption of a search for an injured Hungarian hiker missing in the Alps north of the capital Ljubljana since Sunday was temporarily suspended because of strong winds.

Rescuers on Monday reached his female companion and transferred her to safety, but they were unable to locate the man and couldn't use a helicopter because of strong winds.

Throughout the Balkans authorities issued travel warnings as snow drifts closed some major routes, including sections of motorways in Croatia.

Bosnia, Serbia and Croatia banned the movement of heavy vehicles and imposed limited traffic levels on affected roads.

Parts of Bosnia faced a total halt of railway traffic because of the snow.

Bosnia's state power company described the situation as “extremely hard” in some areas of the country. The weight of heavy, moist snow brought down distribution lines which are hard to access due to snow drifts, the company said in a statement.

Regional N1 television reported dozens of vehicles were stuck in the snow for 10 hours in western Bosnia overnight before they could continue. Authorities in the nearby town of Drvar declared an emergency while struggling to clear snow.

The town's municipal council president Jasna Pecanac told the Drvar radio that the town has been cut off. “Many of our residents are stuck in the snow,” she said. “The situation is very hard as the snow continues to fall.”