Hi! Alexander,

On 29 Nov 18 15:47, you wrote to me:

 PQ>> http://theconversation.com/huge-crater-discovered-in-greenland-he
 PQ>> res-how-the-impact-may-h ave-wiped-out-the-mammoths-107122

 AK> -----Beginning of the citation-----
 AK> Analysis of the grains also shows that the impact was most likely made
 AK> by an iron meteorite more than 1km wide. It would have occurred during
 AK> the Pleistocene, between about 12,000 and 3m years ago.
 AK> ----- The end of the citation -----

 AK> The crater age is very obscure.
 AK> Although many scientists have been searching for a long time for a
 AK> catastrophic event that happened about 12000 years ago.

I have seen other research papers and 'dig' reports suggesting that durimg
those times (20-10 thousand years ago), the demise of the mammoth seemed to be
a 'sure thing'. Skeletal remains show incredible size variations the further
back in time, as digs go deeper.  The older animals are much larger.

Bone analyses are showing essential mineral degradation in younger specimens. 
It would appear that something was lacking in their diet or some pressure on
their evolutionary survival prevented them from acquiring said nutrition, or,
they were subject to a human hunting predomiance (an upsurge in hunting
activity) as other non-linked studies suggest.

Cheers,
Paul.

... Gotta run!  HAL just shut off the life support system again...
--- GoldED+/LNX 1.1.5-b20130515