Tree of relationships of Pleistocene human ancestors including Neanderthal and Denisovan genomes. Recent human relationships based on Ragsdale and coworkers (2013). The Thorin genome (grouped together with the Forbes' Quarry skull) adds to the diversity of later Neanderthals. The diversity among these groups was still less than within modern African populations or among Denisovan populations.
John Hawks analyzes the implications of the new "Thorin" genome from Gortte Mandrin and provides charts above in the process of putting the new ancient genome in context.
is super archaic H erectus
ReplyDeleteThey don't know, but that is probably the most plausible candidate. H. Habilis would be the only other plausible candidate.
ReplyDeletewhat are the implications of super archaic H erectus DNA in Neanderthal genome
ReplyDeleteRecovering signals of ghost archaic introgression in African populations
ReplyDeleteArun Durvasula1 and Sriram Sankararaman1,2,3,4,*
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7015685/
While introgression from Neanderthals and Denisovans has been documented in modern humans outside Africa, the contribution of archaic hominins to the genetic variation of present-day Africans remains poorly understood. We provide complementary lines of evidence for archaic introgression into four West African populations. Our analyses of site frequency spectra indicate that these populations derive 2 to 19% of their genetic ancestry from an archaic population that diverged before the split of Neanderthals and modern humans. Using a method that can identify segments of archaic ancestry without the need for reference archaic genomes, we built genome-wide maps of archaic ancestry in the Yoruba and the Mende populations. Analyses of these maps reveal segments of archaic ancestry at high frequency in these populations that represent potential targets of adaptive introgression. Our results reveal the substantial contribution of archaic ancestry in shaping the gene pool of present-day West African populations.
19% of their genetic ancestry from an archaic population that diverged before the split of Neanderthals and modern humans.
that doesn't seem like RAO
What on Earth is HLD 6?
ReplyDeleteA new analysis of the Hualongdong skull has paleoanthropologists wondering if there may be a hidden hominin in the Middle/Late Pleistocene!
**In the original cut of this video, around 3:05, I said that the Middle Pleistocene no longer has Australopiths or Homo naledi. I have no idea what was going on in my brain, naledi persists unto ~250k as I have mentioned in many videos prior. Goofy mistake on my part, but it has been rectified to reflect correct dates
https://www.youtube.com/watch?v=2vyHhFCE0mo&t=1022s
Why archaeologists avoid discussing this skull ?
In 2019, archaeologists have unearthed a 300,000-year-old skull in the Hualongdong cave of Anhui province, eastern China. This discovery has created waves in the scientific world and may revolutionalize the way we look at human evolution and their early ancestors.
The skull, known as HDL 6 (Hualongdong 6), was found along with 15 other specimens, including a nearly complete jawbone and leg bones. The remains belong to a young individual, estimated to be around 12 or 13 years old at the time of death.
https://www.youtube.com/watch?v=uaKIFRPwRNY
Hualongdong 6 has many mixed erectus and modern features
Later papers had suggested that Durvasula's report of ghost African ancestry is probably due to population structure and methodology issues and not due to actual African archaic admixture, notwithstanding the fact that Africa is a perfectly plausible place for archaic admixture to have taken place.
ReplyDelete