Approximately two-thirds, 63 percent, of contemporary mammal species became extinct in Africa and the Arabian Peninsula 30 million years ago as a result of a climatic event, precisely the Ice Age.
A hitherto unknown mass extinction event Communication biology The study’s American, English and Egyptian authors, published in the journal, identified and analyzed data from hundreds of local fossils.
This event was caused by cooling at the boundary of the Eocene and Oligocene periods, as ice sheets widened and sea levels fell. It is a general idea that animals living near the equator survived ice ages relatively easily – however, recent research has shown that drastic changes have brought about drastic changes here as well, with cooling accompanied by a series of significant volcanic events covering vast areas of lava. molten.
Obviously, there was a major extinction followed by a recovery
Stephen Heritage, a researcher at Duke University, explains.
The event is detected by the tooth. The teeth of rodents and monkeys that appeared a few million years later became completely different because they were new species that had adapted to completely different habitats.
The diversity of our human ancestors disappeared about 30 million years ago, leaving only one type of tooth. Eric R. said: Seifert, MD, a professor in the Department of Anatomy at the University of Southern California School of Medicine, “can use the shape of ancestral teeth to determine the possibilities for dietary diversity.”
It’s an interesting story that there is a bottleneck in our evolutionary story. We would have been close enough that we would never have existed if our ape ancestors had gone extinct 30 million years ago. Fortunately, this was not the case.
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