|FROM ||Ruben Safir
|SUBJECT ||Subject: [Hangout - NYLXS] (fwd) Human & ape evolution
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Subject: Human & ape evolution
From: marc verhaegen
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Xref: panix sci.bio.paleontology:77219
4 frequent paleo-anthropological prejudices, with 0 evidence:
Many PAs still *assume* that human ancestors
1) became bipedal when we left the trees for the gound??
2) came Out-of-Africa (OoA)??
3) were savanna-dwellers???
4) had australopithecine ancestors??
These are only anthropo- & afro-centric just-so pre-assumptions:
- Darwin thought "Out of Africa" (Pan & Gorilla were African),
- Africa (apart from sahara) is mostly jungle or savanna,
- apiths lived in Africa, were BP, and had some humanlike anatomical traits=
Therefore, many (most?) PAs still assume, without evidence, that
1) we became BP after we split from Pan, and left the forest,
2) Homo & "hominins" originated in Africa (OoA),
3) we ran bipedally in savannas,
4) BP fossils in Africa incl. apiths are =E2=80=9Chominin=E2=80=9D (anthrop=
o-centric belief: Pan & Gorilla have no fossils=E2=80=A6??).
1) early-Miocene Hominoidea were already BP=3Dvertical waders-climbers in s=
wamp forests (humans & gibbons still are BP), google AQUARBOREAL,
2) Mio-Pliocene Hominoidea came from N-Tethys coasts (hylobatids & pongids =
still live in SE.Asia),
3) human ancestors have always been waterside (cf. physiology, anatomy, die=
t+DHA, island colonizations, intercontin.dispersals etc.etc.),
4) E.Afr.apiths resemble Gorilla > Pan > Homo, S.Afr.apiths resemble Pan > =
Homo or Gorilla (e.g. my Hum.Evol.papers).
Partial convergence? Nasalis monkeys (large & upright body, rel.long legs=
=E2=80=A6) in mangrove forests also often wade bipedally & climb arms overh=
Likely scenario IMO: Plate Tectonics & Hominoid Splittings:
c 30 Ma India approaching S-Asia formed island archipels =3D coastal forest=
c 25 Ma Catarrhini reaching these islands became wading bipedally + climbin=
g arms overhead =3D aquarboreal Hominoidea.
c 20 Ma India further underneath Asia split hylobatids (E) & other=3Dgreat =
apes (W), both following coastal forests along N-Tethys Ocean (E vs W).
c 15 Ma Mesopotamian Seaway Closure split pongid-sivapith (E) & hominid-dry=
opith (W: Medit.Sea + hominids s.s. in incipient Red Sea swamp forests).
c 8 Ma in Red Sea: N-Rift fm, followed by Gorilla -> Afar -> Praeanthropus =
afarensis -> boisei -> today G.gorilla & G.beringei.
c 5 Ma the Red Sea opens into Gulf (Francesca Mansfield thinks caused by th=
e Zanclean mega-flood 5.33 Ma):
=E2=80=93 Pan went right: E.Afr.coastal forests -> S-Rift -> Transvaal -> A=
ustralopith.africanus -> robustus (// Gorilla) -> today P.troglodytes & P.p=
=E2=80=93 Homo went left: S.Asian coasts -> Java early-Pleist.H.erectus -> =
shallow-diving: pachy-osteo-sclerosis, DHA, brain+, stone tools, shell engr=
mid- -> late-Pleist.: diving -> wading -> walking H.sapiens.
Early-Pleist. H.erectus' diet was probably mostly shellfish (engravings, st=
one tools, DHA & larger brain etc.),
but what did Mio-Pliocene Hominoidea eat in coastal forests? fruits? mangro=
ve oysters? sort of rice?? ...?
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