This article had confused references and was pretty deficient overall.
Like the statement
Protein was big in Paleolithic times, with up to 30% of the diet being
meat -- much more than is recommended today, says Eaton.
where even Cordain "The Paleo Diet" says "a little more than half - 55%"
(pg 22) -- and other references cite higher.
Philip Thrift
http://www.geocities.com/paleofitness