ALL FOSSILS ARE YOUNG
See this post: http://www.thunderbolts.info/forum/phpBB3/viewtopic.php?f=10&t=16025&start=720#p119437
It explains that sedimentary rock strata had to be deposited over a short time period, because the rocks are sorted into layers of different rock types. It wouldn't have been possible for just one rock type to have been deposited for thousands or millions of years. The only way to get individual rock types is via violent flooding or megatsunamis, caused by tidal forces from a large body coming close to Earth. The turbulent waters first mix sediments, then as they slow down at the bottom, they sort the sediments into separate layers. Since all fossils occur within sedimentary rock strata and since all such strata were deposited over a short time span within a few thousand years ago, no fossil can be over a few thousand years old.