[meteorite-list] Woolly Mammoths & Gigantism

[Francis Graham]

Hi
  Sterling K. Webb and Paul H's discussion on the disadvantages of
evolved gigantism is a very good one.  I would like to add one more:
small organisms can be distributed world wide on tsunami debris, but
larger organisms clearly cannot.
   This effect is happening today:

http://www.laboratoryequipment.com/news-Tsunami-Debris-Carries-Potential-Invasive-Species-061112.aspx?et_cid=2692184&et_rid=54630376&linkid=http%3a%2f%2fwww.laboratoryequipment.com%2fnews-Tsunami-Debris-Carries-Potential-Invasive-Species-061112.aspx

    I hope this does not "drift" too much off topic.  We see good
evidence that big meteor impacts alter ecosystems, but every altered
ecosystem doth not have a crater associated with it.
    Other stuff can happen, of course, and the list is long.

Francis Graham