Skip to comments.Earliest hominin migrations into the Arabian Peninsula required no novel adaptations
Posted on 11/02/2018 11:24:36 PM PDT by SunkenCiv
A new study... suggests that early hominin dispersals beyond Africa did not involve adaptations to environmental extremes, such as to arid and harsh deserts. The discovery of stone tools and cut-marks on fossil animal remains at the site of Ti's al Ghadah provides definitive evidence for hominins in Saudi Arabia at least 100,000 years earlier than previously known. Stable isotope analysis of the fossil fauna indicates a dominance of grassland vegetation, with aridity levels similar to those found in open savanna settings in eastern Africa today. The stable isotope data indicates that early dispersals of our archaic ancestors were part of a range expansion rather than a result of novel adaptations to new environmental contexts outside Africa...
It has recently been argued that early Homo sapiens occupied a diversity of extreme environments, including deserts, tropical rainforests, arctic, and high-altitude settings, around the world. By contrast, the dispersals of other earlier and contemporaneous species of Homo, such as Neanderthals, appear to be associated with generalized use of different forest and grassland mosaics in and among river and lake settings. A lack of palaeoenvironmental information has made it difficult to systematically test this idea and indeed a number of researchers maintain that non-Homo sapiens species demonstrate cultural and ecological adaptive flexibility...
Significantly, the research team found stone tools alongside evidence for the butchery of animals on bones, confirming a hominin presence in association with these animals 500,000 to 300,000 years ago. Michael Petraglia, the principal archaeologist of the project and a co-author on the paper says, "This makes Ti's al Ghadah the first, early hominin-associated fossil assemblage from the Arabian Peninsula, demonstrating that our ancestors were exploiting a variety of animals as they wandered into the green interior."
(Excerpt) Read more at eurekalert.org ...
This is a sand dune in the Nefud Desert, Saudi Arabia. Credit: Palaeodeserts Project (Klint Janulis)
But once the first antonyms arrived, pretty much every novel there had to be re-written.
Seems like the Human Body was designed well enough to adapt to where it was born and grew up...human know-how took care of the more savage swings of climate, via clothing/shelter but the general habitat/climate/altitude can be ‘grown into’
Not necessarily where they grew up but,rather,where their ancestors are from.I'm no scientist but I doubt that it's a coincidence that my skin is as white and pale as can be thanks to the fact that my Irish ancestors saw almost no sunlight whereas someone from Equatorial regions are likely to have dark skin.That's called adaptation...which occurred gradually over many,many thousands of years.
Homonim is a homonym.
Fossils hint hominids migrated through a green Arabia 300,000 years ago
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