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The controversial Toba catastrophe theory, presented in the late 1990s to early 2000s, suggested that a bottleneck of the human population occurred approximately 75,000 years ago, proposing that the human population was reduced to perhaps 10,000–30,000 individuals [14] when the Toba supervolcano in Indonesia erupted and triggered a major ...
Earlier genetic analysis of Alu sequences across the entire human genome has shown that the effective human population size was less than 26,000 at 1.2 million years ago; possible explanations for the low population size of human ancestors may include repeated population crashes or periodic replacement events from competing Homo subspecies. [88]
A late human population bottleneck is postulated by some scholars at approximately 70,000 years ago, during the Toba catastrophe, when Homo sapiens population may have dropped to as low as between 1,000 and 10,000 individuals.
It is estimated by J. Lawrence Angel [15] that the average life span of hominids on the African savanna between 4,000,000 and 200,000 years ago was 20 years. This means that the population would be completely renewed about five times per century, [ citation needed ] assuming that infant mortality has already been accounted for [ clarification ...
Human dispersal beyond 45°N seems to have been quite limited during the Lower Palaeolithic, with evidence of short-lived dispersals northward beginning after a million years ago. Beginning 700,000 years ago, more permanent populations seem to have persisted across the line coinciding with the spread of hand axe technology across Europe ...
According to multiple researchers, archaeological finds in New Mexico’s White Sands National Park date human activity in the area to between 21,000 and 23,000 years ago. Lowery now believes ...
Archaeologists at Umm Jirsan recently found animal bones dating from 400 years to more than 4,000 years ago, and human remains ranging from 150 years to about 6,000 years ago.
[80] [81] This is supported by a date of 50,000–60,000 years ago for the oldest evidence of settlement in Australia, [69] [82] around 40,000 years ago for the oldest human remains, [69] the earliest humans artifacts which are at least 65,000 years old [83] and the extinction of the Australian megafauna by humans between 46,000 and 15,000 ...