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
TT

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.



KAUST Develops Robotic System to Improve Date Palm Harvesting

The robotic arms of the system will be able to move as quickly as a human farmer while precisely picking each date without damage to itself or the fruit - SPA
The robotic arms of the system will be able to move as quickly as a human farmer while precisely picking each date without damage to itself or the fruit - SPA
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KAUST Develops Robotic System to Improve Date Palm Harvesting

The robotic arms of the system will be able to move as quickly as a human farmer while precisely picking each date without damage to itself or the fruit - SPA
The robotic arms of the system will be able to move as quickly as a human farmer while precisely picking each date without damage to itself or the fruit - SPA

The King Abdullah University of Science and Technology (KAUST) has been developing a new robotic system designed to automate date palm harvesting, SPA reported.
According to a KAUST press release, the system aims to revolutionize the agriculture industry and establish Saudi Arabia as a leader in agriculture innovation. The research, led by KAUST Assistant Professor Shinkyu Park, focuses on automating key processes in date farming, such as harvesting, pollination, and tree maintenance through AI-powered robotics, and promises to yield larger quantities of more nutritious dates.
Park's "robotic farmers" solution combines robotics for reliable farming and AI for greater efficiency. The robotic arms of the system will be able to move as quickly as a human farmer while precisely picking each date without damage to itself or the fruit. Equipped with high-precision visual sensors, the robotic farmers can identify individual dates, flowers, and tree structures to perform tasks such as harvesting, spraying, and pruning, ensuring tree health, productivity, and longevity while reducing the risk of pest infestations and diseases.
Field trials are scheduled to begin during the 2025 harvest season, with full operational capability expected within three years. Park suggested that a Robots-as-a-Service (RaaS) model could allow smaller farmers to access the technology without the burden of purchasing the robots outright.
The project is one of many at KAUST that will benefit date farming and food security. Such projects provide Saudi Arabia an advantage not only in agricultural technology but also in agricultural expertise, as leaders in farming and robotics are drawn to the region, while laborers will be the first to engage with the new technologies developed by Park and his team, according to the release.
"I am excited that this initiative extends beyond engineering solutions and cultivates research and development opportunities for local talent, contributing to the long-term sustainable educational and economic growth of the Kingdom," he said.