No sudden change to modern humans

From: glenn morton (mortongr@flash.net)
Date: Thu Mar 09 2000 - 16:21:18 EST

  • Next message: glenn morton: "more evidence for neandertal/human interbreeding"

    For those who might still believe that there was a sudden change aoubt
    40,000-60000 years ago to modern humans you might want to consider the work
    going on at IdlIu22. There is no sudden change in technology that would
    mark the creation of modern man. The change in technologies was very
    gradual. This idea that mankind was suddenly created at that time receives
    no observational support.

    "Genetic and fossil evidence suggest that anatomically modern Homo sapiens
    evolved in Africa during the Middle Stone Age (MSA), sometime between
    200,000 and 30,000 to 40,000 years ago. However, many archaeologists
    suggest that behavioural modernity, as measured by European Upper
    Palaeolithic innovations, only developed during the subsequent Later Stone
    Age (LSA), less than 30,000 to 40,000 years ago. Since few African sites
    contain a record of the MSA-LSA transition, it is hard to test the
    hypothesis of a radical transformation of technology and adaptation at this
    time.

    This paper reports on results from test excavations at IdIu22 (33°12'E,
    8°46'S), a collapsed volcanic rockshelter located east of the Songwe River
    in the Lake Rukwa Rift Valley of southwestern Tanzania. About 65,000
    artifacts were recovered during excavations in 1995 and 1997, and a series
    of both typological and technological attributes were recorded for each. A
    continuous, extensive archaeological deposit was revealed which has both
    Pleistocene and Holocene components.
    Sites like IdIu22 offer the potential to address the whole question of the
    onset of behavioural modernity. Instead of abrupt change, the lithic
    material excavated here shows a gradual transformation from a flake based
    LSA or LSA/MSA transitional industry to a bladelet and microlithic one,
    culminating with a Holocene LSA employing microburin production techniques.
    Added to regional information provided from surface MSA and LSA sites
    nearby, a picture of decreasing mobility and catchment area over time is
    developing. At no point can a sudden change from the MSA to the LSA be
    documented."
    Pamela R. Willoughby "Investigating the origins of modern human behaviour
    in southwestern Tanzania: a Middle or a Later Stone Age event?" Abstracts
    for the Paleoanthropology Society Meeting, The University of Pennsylvania
    Museum, Philadelphia, Pennsylvania, U.S.A., April 4-5, 2000
    **

    glenn

    Foundation, Fall and Flood
    Adam, Apes and Anthropology
    http://www.flash.net/~mortongr/dmd.htm

    Lots of information on creation/evolution



    This archive was generated by hypermail 2b29 : Thu Mar 09 2000 - 22:13:42 EST