Pleistocene coastal dispersals confirmed
(interglacials + inland along rivers & lakes):

"Animal fossils (primarily vertebrates) from KAM 4 allow us to reconstruct the palaeo-environmental & bio-geographical context of hominin occupations. Hippopotamus fossils had previously been reported in Arabia from MIS 5 contexts. KAM 4 shows that hippopotamuses were also present during MIS 7 and, provisionally, MIS 9. We also identified hippopotamus in the surface scatter of fossils at the nearby site of Ti’s al Ghadah. The repeated presence of hippopotamuses, which are obligate semi-aquatic mammals that require permanent water bodies several metres deep, provides powerful evidence for the extent of environmental amelioration during repeated ‘green Arabia’ pluvial phases."

Multiple hominin dispersals into Southwest Asia over the past 400,000 years
Huw S Groucutt cs 2021 Nature
https://www.nature.com/articles/s41586-021-03863-y
....
These findings (incl. the oldest dated hominin occupations in Arabia) reveal at least 5 hominin expansions into the Arabian interior, coinciding with brief ‘green’ windows of reduced aridity c 400, 300, 200, 130–75 & 55 ka.
Each occupation phase is characterized by a distinct form of material culture, indicating colonization by diverse hominin groups, and a lack of long-term SW.Asian population continuity.
Within a general pattern of African & Eurasian hominin groups being separated by Pleistocene Saharo-Arabian aridity, our findings reveal the tempo & character of climatically modulated windows for dispersal & admixture.

IOW, the littoral theory (Pleistocene coastal intercontinental dispersal + interglacially inland along rivers-lakes) explains why
- H.sapiens (vs apes=apiths) has fur loss, thick SC fat, fully upright, voluntary breathing, huge brain, ext.nose etc.
- H.erectus & H.neand. had platycephaly, platymeria, platyspondyly, platypelloidy, pachy-osteo-sclerosis & ear exostoses.

Only complete idiots still believe our ancestors ran after kudus.