Gigantopithecus brachyThe largest primate in history and one of the largest species of Southeast Asian megafauna, it lived in China from about 2 million years until its extinction during the Middle Pleistocene. New research shows that starting 2.3 million years ago, this environment was a mosaic of forests and grasses, providing ideal conditions to thrive. Gigantopithecus brachy population. However, from 295,000 years ago, just before and during the extinction period 215,000 years ago, increased seasonality led to increased environmental variability, changes in plant communities, and an increase in open forest environments. Although they are close relatives, Chinese orangutan (Pongo Weidenrach)managed to adapt their food preferences and behavior to this fluctuation. Gigantopithecus brachy There were signs of chronic stress and population decline. Ultimately, that struggle to adapt led to the extinction of the largest primate to ever live on Earth.
Impressions of a group of artists Gigantopithecus brachy In the forest of southern China. Image credit: Garcia / Joannes-Boyau, Southern Cross University.
Gigantopithecus brachy It is an extinct giant hominid that once lived in the jungles of Southeast Asia.
As the name suggests, this giant primate was larger than a gorilla, reaching up to 3 meters (10 feet) tall and weighing up to 540 kg (1,200 pounds).
“Our current understanding is that Gigantopithecus brachy “It originates from early to mid-Pleistocene cave deposits between the Yangtze River in southern China and the South China Sea,” said Professor Yingqi Zhang of the Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, and colleagues.
“This primate is known for its unusually large molars, abnormally thick enamel, estimated height of about 3 meters, and weight of 200 to 300 kg, making it the largest primate to have ever existed on Earth. I am.”
“Despite 85 years of exploration, Gigantopithecus blacki's fossil record is limited to four mandibles and nearly 2,000 isolated teeth, with no postcranial evidence. ”
“The initial discovery as a 'dragon's tooth' in a pharmacy in Hong Kong led to the search for the first in situ finds, which led to the discovery of several cave sites in two major regions of Chongzuo and Fuping basins in Guangxi province. This led to the discovery of
“These sites contain important evidence of its survival and eventual demise.”
“Providing a clear cause for a species' extinction is a major feat, but establishing the exact time a species disappeared from the fossil record provides a target time frame for environmental reconstruction and behavioral assessment.” said Macquarie University geochronologist Dr John Martin. Kira Westaway.
“Without reliable dating, you're simply looking for clues in the wrong places.”
To identify potential causes Gigantopithecus brachy In case of extinction, the researchers applied a regional approach to 22 caves in the Chongzuo and Bupyeong basins. Gigantopithecus brachy-Bearing or non-bearing-Gigantopithecus brachy-Contains cave deposits.
They combined previous excavations with recently discovered caves to identify and sample fossil breccias for dating, paleoclimate estimation, and behavioral analysis.
Six different dating techniques were applied to the cave deposits and fossils, yielding 157 radiometric dates.
Luminescence dating measures light-sensitive signals in buried sediments. Gigantopithecus brachy Fossils were the primary technology supported by uranium series and electron spin resonance dating. Gigantopithecus brachy The tooth itself.
“Direct dating of the fossil remains allowed us to confirm that their ages match the luminescence order of the deposits in which they were found, providing a comprehensive and reliable chronology of the human extinction. Gigantopithecus brachy'' said Dr Renaud-Joan Boyau, a geochronologist at Southern Cross University.
The findings show that Gigantopithecus brachy They went extinct between 295,000 and 215,000 years ago, much earlier than previously thought.
Before this time, Gigantopithecus brachy They thrived in rich and diverse forests.
By 700,000 to 600,000 years ago, the environment had further changed due to increased seasonal intensity, leading to changes in the structure of forest communities.
orangutans etc. Pongo Weidenrach They adapted their size, behavior, and habitat preferences in response to changing conditions.
In comparison, Gigantopithecus brachy When preferences were not available, they relied on backup food sources with low nutritional value, reducing dietary diversity.
The primates experienced reduced locomotion, reduced geographic foraging range, chronic stress and population decline.
“Gigantopithecus brachy “It was the ultimate specialist compared to more agile adapters like orangutans, but this ultimately led to its demise,” Professor Chan said.
“With the threat of a sixth mass extinction looming over us, there is an urgent need to understand why species go extinct,” Dr Westaway said.
“Exploring the reasons for unresolved extinctions in the past is a good starting point for understanding the resilience of primates and the fate of other large animals in the past and future.”
of findings Published in today's diary Nature.
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Y. Chan other.The end of the giant ape Gigantopithecus brachy. Nature, published online on January 10, 2024. doi: 10.1038/s41586-023-06900-0
Source: www.sci.news
