Fossils of a carnivorous dinosaur unearthed in Argentina are shedding new light on an intriguing group of predators that apparently were just as happy to slash victims to death with sickle-shaped hand claws as to chomp them into an early grave.
Scientists said on Wednesday the creature, called Murusraptor barrosaensis, lived about 80 million years ago during the Cretaceous Period, measured about 6.5m long and was a pursuit hunter more lightly built than some other predatory dinosaurs.
Murusraptor was a member of a group of meat-eaters called megaraptors, meaning “giant thieves,” that prowled Patagonia, although fossils of relatives have been discovered in Australia and Japan.
Photo: Reuters
“Most of the different species known from this clade are based on rather fragmentary specimens. The Murusraptor specimen preserved the complete posterior half of the skull, several vertebrae and pelvis bones, unveiling unknown areas of the skeleton of this group,” paleontologist Rodolfo Coria of Argentina’s Universidad Nacional de Rio Negro said.
“The braincase is complete, and is the only known among megaraptors,” Coria added. “It brings a unique opportunity to search for characteristics of neurological development in these dinosaurs.”
Megaraptors were medium-sized predators compared with some of Argentina’s giant Cretaceous meat-eaters, like the about 12.5m Giganotosaurus, and likely hunted in a different way. Giganotosaurus, which lived about 17 million years before Murusraptor, had a massively built skull and large teeth for killing prey, along with puny arms that would have done little good in hunting.
Other scientists last week announced the discovery of fossils of another Argentine carnivorous dinosaur, called Gualicho, a bit larger than Murusraptor, that had feeble arms, which were akin in size to a human child’s.
In contrast, megaraptors possessed strong arms that wielded sickle-like claws that could inflict fatal wounds on prey, along with a more lightly built skull and jaws studded with smaller teeth. They also had air-filled, bird-like bones.
However, that certainly did not mean an encounter with Murusraptor in prehistoric Patagonia would end well.
“A person might say: ‘Oh my god, a megaraptor.’ And then he would die,” Coria added.
Murusraptor means “thief from the wall,” because its fossils were collected from the wall of a creek in Argentina’s Neuquen Province.
The research was published in the journal PLOS ONE.
CHAGOS ISLANDS: Recently elected Mauritian Prime Minister Navin Ramgoolam told lawmakers that the contents of negotiations are ‘unknown’ to the government Mauritius’ new prime minister ordered an independent review of a deal with the UK involving a strategically important US-UK military base in the Indian Ocean, placing the agreement under fresh scrutiny. Under a pact signed last month, the UK ceded sovereignty of the Chagos archipelago to Mauritius, while retaining control of Diego Garcia — the island where the base is situated. The deal was signed by then-Mauritian prime minister Pravind Jugnauth and British Prime Minister Keir Starmer on Oct. 3 — a month before elections in Mauritius in which Navin Ramgoolam became premier. “I have asked for an independent review of the
France on Friday showed off to the world the gleaming restored interior of Notre-Dame cathedral, a week before the 850-year-old medieval edifice reopens following painstaking restoration after the devastating 2019 fire. French President Emmanuel Macron conducted an inspection of the restoration, broadcast live on television, saying workers had done the “impossible” by healing a “national wound” after the fire on April 19, 2019. While every effort has been made to remain faithful to the original look of the cathedral, an international team of designers and architects have created a luminous space that has an immediate impact on the visitor. The floor shimmers and
THIRD IN A ROW? An expert said if the report of a probe into the defense official is true, people would naturally ask if it would erode morale in the military Chinese Minister of National Defense Dong Jun (董軍) has been placed under investigation for corruption, a report said yesterday, the latest official implicated in a crackdown on graft in the country’s military. Citing current and former US officials familiar with the situation, British newspaper the Financial Times said that the investigation into Dong was part of a broader probe into military corruption. Neither the Chinese Ministry of Foreign Affairs nor the Chinese embassy in Washington replied to a request for confirmation yesterday. If confirmed, Dong would be the third Chinese defense minister in a row to fall under investigation for corruption. A former navy
‘VIOLATIONS OF DISCIPLINE’: Miao Hua has come up through the political department in the military and he was already fairly senior before Xi Jinping came to power in 2012 A member of China’s powerful Central Military Commission has been suspended and put under investigation, the Chinese Ministry of National Defense said on Thursday. Miao Hua (苗華) was director of the political work department on the commission, which oversees the People’s Liberation Army (PLA), the world’s largest standing military. He was one of five members of the commission in addition to its leader, Chinese President Xi Jinping (習近平). Ministry spokesman Colonel Wu Qian (吳謙) said Miao is under investigation for “serious violations of discipline,” which usually alludes to corruption. It is the third recent major shakeup for China’s defense establishment. China in June
RSS