Friday, November 12, 2010

The First Butchers: 3.4 million old meat eaters!

The First Butchers: Scientific American

A long time ago, by the shores of a lake in East Africa, a group of hungry foragers tucked into a primeval steak dinner. They carved the meat of cow- and goat-sized animals with sharp stone tools and smashed the bones to get at the rich marrow inside. The scene is remarkable mainly because it happened 3.4 million years ago, pushing back by 800,000 years the earliest known example of hominids using stone tools and eating meat.

The foragers in question were likely members of the primitive genus Australopithecus, specifically A. afarensis, the species to which the celebrated Lucy fossil belongs. Scientists had long believed that the australopithecines, whose teeth and jaws were adapted for eating fruit, seeds and other plant foods, were primarily vegetarian. But the new finds—cut-marked animal bones recovered from a site called Dikika, just a few kilometers from the Lucy site in Ethiopia’s Afar region—suggest that “we could now be looking at an extended period of time when [hominids] were including meat in their diet and experimenting with the use of stone tools,” observes lead study author Shannon P. Mc­Pher­ron of the Max Planck Institute for Evolutionary Anthropology in Leipzig, Germany. A report describing the bones appeared in the August 12 issue of Nature.

2 comments:

Scott Bolander said...

Since I don't see any way of contacting you, look at this:

http://www.mnn.com/lifestyle/health-well-being/stories/parasitic-worms-could-offer-relief-for-allergy-sufferers

Scott Carlson in Chicago said...

Nice! Very interesting, thanks! It's a little like probiotics. It seems like there is some evidence for probiotics (and parasites as well, in the article you mentioned), but my take is that even if there is a role played by these organisms, until we know a lot more about which ones are good and what they do, I'd be reluctant to jump in and try it out myself.