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  • Re: H.erectus s.s. were molluscivorous.

    From Primum Sapienti@21:1/5 to Marc Verhaegen on Mon Jan 1 23:19:53 2024
    Marc Verhaegen wrote:
    Brian Switek 2011 "Written in Stone" Icon books p.169:
    "... ribs of Indohyus and Pakicetus show just this kind of bone

    We are not whales nor even short limbed obligate quadrupeds...

    restructuring. The development of bone ballast preceded other aquatic adaptations, but it had a trade-off. As the bones in the limbs and ribs of these animals became denser they would have become more brittle. Running on land with heavy, brittle bones would have been more energetically expensive
    and even risky, thus providing another reason for these animals to spend
    more time in the water ..."

    H.erectus s.s. fossils are found in coastal sediments, amid shellfish,
    corals, barnacles etc. Their sekeletons were pachyosteosclerotic. They
    used stone tools. They colonised oversea islands. Their brains were twice
    as large as those of australopiths & apes. They had ear exostoses. Their
    teeth showed micro-wear caused by sand & processing of molluscs. They made shell-engravings. ...

    Is there still somebody who doubts they were predominantly
    shallow-diving mammals?

    https://www.gondwanatalks.com/l/the-waterside-hypothesis-wading-led-to-upright-walking-in-early-humans/

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Pandora@21:1/5 to All on Wed Jan 3 12:11:14 2024
    Op 31-12-2023 om 18:32 schreef Marc Verhaegen:

    Brian Switek 2011 "Written in Stone" Icon books p.169:
    "... ribs of Indohyus and Pakicetus show just this kind of bone restructuring. The development of bone ballast preceded other aquatic adaptations, but it had a trade-off. As the bones in the limbs and ribs of these animals became denser they would have
    become more brittle. Running on land with heavy, brittle bones would have been more energetically expensive and even risky, thus providing another reason for these animals to spend more time in the water ..."

    H.erectus s.s. fossils are found in coastal sediments, amid shellfish, corals, barnacles etc. Their sekeletons were pachyosteosclerotic. They used stone tools. They colonised oversea islands. Their brains were twice as large as those of
    australopiths & apes. They had ear exostoses. Their teeth showed micro-wear caused by sand & processing of molluscs. They made shell-engravings. ...

    Is there still somebody who doubts they were predominantly shallow-diving mammals?

    Yes, almost all of the scientific community, except for a small
    sectarian group, a cult.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)