Some minus habentes here don't know the difference between swim & dive.-
- All tetrapods with pachyosteosclerosis (POS) are slow-shallow divers for sessile foods. H.erectus & neandertals had POS...
- Auditory exostoses are caused by cold water irrigation. Neandertals had ear exostoses...
IOW, only incredible imbeciles deny H.erectus & neandertals frequently dived for sessile foods.
_____
Pachyosteosclerosis in Archaic Homo:
Heavy Skulls for Diving, Heavy Legs for Wading?
Stephen Munro cs 2011 Sch.Archaeol.Anthrop. Austr.Nat.Univ.Canberra
pp.82-105 ch.5 in
Was Man More Aquatic in the Past?
Mario Vaneechoutte cs eds 2011 Bentham Sci.Publ.
Compared to the skeletons of all other primates (incl.H.sapiens), the crania & postcrania of H.erectus were typically massive, displaying
- extremely thick bones,
- compact cortices,
- narrow medullary canals.
Even outside the primate order, examples of animals displaying such massive bones are rare.
...
Here, we present data showing:
unusu.heavy bones were a typical (although not exclusive, nor indispensable) characteristic of H.erectus populations through the early, middle & late Pleistocene, in areas of Asia, Africa & Europe.
A comparative review of the occurrence of massive skeletons in other mammals suggests:
they have an important buoyancy control function in shallow-diving (semi)aquatic spp,
they are part of a set of adaptations that allow for the more efficient collection of slow, sessile & immobile foods, e.g.
- aquatic vegetation,
- hard-shelled invertebrates.
We therefore consider the possibility:
part-time shore-line collection of aquatic foods might have been a typical element of the lifestyle of H.erectus populations.
We discuss
- the alternative explanations for heavy bones from the literature,
- apparent exceptions to the rule,
e.g. thin-boned H.erectus & thick-boned H.sapiens fossils.
A review of the palaeo-ecological data shows:
most (if not all) H.erectus fossils & tools are ass.x
- water-dependent molluscs,
- large bodies of permanent water.
Fresh & salt water habitats have different densities:
in H.erectus & in some H.sapiens populations, there might have been a positive correlation between massive bones & dwelling along sea or salt lake shores.
Pachyosteosclerosis in Archaic Homo:
Heavy Skulls for Diving, Heavy Legs for Wading?
Stephen Munro cs 2011 Sch.Archaeol.Anthrop. Austr.Nat.Univ.Canberra pp.82-105 ch.5 in Was Man More Aquatic in the Past?
Mario Vaneechoutte cs eds 2011 Bentham Sci.Publ.
Compared to the skeletons of all other primates (incl.H.sapiens), the crania & postcrania of H.erectus were typically massive, displaying
- extremely thick bones,
- compact cortices,
- narrow medullary canals.
Even outside the primate order, examples of animals displaying such massive bones are rare. ...
Here, we present data showing:
unusu.heavy bones were a typical (although not exclusive, nor indispensable) characteristic of H.erectus populations through the early, middle & late Pleistocene, in areas of Asia, Africa & Europe.
A comparative review of the occurrence of massive skeletons in other mammals suggests:
they have an important buoyancy control function in shallow-diving (semi)aquatic spp,
they are part of a set of adaptations that allow for the more efficient collection of slow, sessile & immobile foods, e.g.
- aquatic vegetation,
- hard-shelled invertebrates.
We therefore consider the possibility:
part-time shore-line collection of aquatic foods might have been a typical element of the lifestyle of H.erectus populations.
We discuss
- the alternative explanations for heavy bones from the literature,
- apparent exceptions to the rule,
e.g. thin-boned H.erectus & thick-boned H.sapiens fossils.
A review of the palaeo-ecological data shows:
most (if not all) H.erectus fossils & tools are ass.x
- water-dependent molluscs,
- large bodies of permanent water.
Fresh & salt water habitats have different densities:
in H.erectus & in some H.sapiens populations, there might have been a positive correlation between massive bones & dwelling along sea or salt lake shores.
Thanks Stephen, of course we know that of all Homo today, Central-West Africans have the densest bones. Do they spent all their time in water, like their aquatic neighbors, West African manatees?
Op zaterdag 1 januari 2022 om 11:30:45 UTC+1 schreef DD'eDeN aka note/nickname/alas_my_loves:
- All tetrapods with pachyosteosclerosis (POS) are slow-shallow divers for sessile foods. H.erectus & neandertals had POS...
- Auditory exostoses are caused by cold water irrigation. Neandertals had ear exostoses...
IOW, only incredible imbeciles deny H.erectus & neandertals frequently dived for sessile foods.
_____
Pachyosteosclerosis in Archaic Homo:
Heavy Skulls for Diving, Heavy Legs for Wading?
Stephen Munro cs 2011 Sch.Archaeol.Anthrop. Austr.Nat.Univ.Canberra pp.82-105 ch.5 in Was Man More Aquatic in the Past?
Mario Vaneechoutte cs eds 2011 Bentham Sci.Publ.
Compared to the skeletons of all other primates (incl.H.sapiens), the crania & postcrania of H.erectus were typically massive, displaying
- extremely thick bones,
- compact cortices,
- narrow medullary canals.
Even outside the primate order, examples of animals displaying such massive bones are rare. ...
Here, we present data showing:
unusu.heavy bones were a typical (although not exclusive, nor indispensable) characteristic of H.erectus populations through the early, middle & late Pleistocene, in areas of Asia, Africa & Europe.
A comparative review of the occurrence of massive skeletons in other mammals suggests:
they have an important buoyancy control function in shallow-diving (semi)aquatic spp,
they are part of a set of adaptations that allow for the more efficient collection of slow, sessile & immobile foods, e.g.
- aquatic vegetation,
- hard-shelled invertebrates.
We therefore consider the possibility:
part-time shore-line collection of aquatic foods might have been a typical element of the lifestyle of H.erectus populations.
We discuss
- the alternative explanations for heavy bones from the literature,
- apparent exceptions to the rule,
e.g. thin-boned H.erectus & thick-boned H.sapiens fossils.
My pathetic little boy, neandertal & even more so erectus bones were incomparably more pachyosteosclerotic that your "dense" African bones.A review of the palaeo-ecological data shows:Thanks Stephen, of course we know that of all Homo today, Central-West Africans have the densest bones. Do they spent all their time in water, like their aquatic neighbors, West African manatees?
most (if not all) H.erectus fossils & tools are ass.x
- water-dependent molluscs,
- large bodies of permanent water.
Fresh & salt water habitats have different densities:
in H.erectus & in some H.sapiens populations, there might have been a positive correlation between massive bones & dwelling along sea or salt lake shores.
Grow up.
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