> Many Pleistocene species are still living
> unchanged... in fact the
> majority of Pleistocene species are (the Pleistocene
> began 1.8my
> ago). Many Recent species evolved in the Pliocene
> (5-1.8my), some in
> the Miocene (24-5my)... and a few even in the middle
> Eocene (42-46my)!.

Don't forget the Pleurotomariidae, which evolved in
the Triassic (245-208 mya) and are still here today.
Of course, the living species evolved in more recent
times, but that's still some incredible longevity!

James

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