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For those interested in the freshwater taxa, many of the Unionidae in North
America would be classified as endangered or threatherned species. This is
a sweeping generalization, but true in many river systems. The freshwater
gastropod Tutoloma magnifica was thought to be extinct, there is a relic
pocket and work on trying to reintroduce it in other areas.
Charlie.
--On Friday, July 07, 2000, 8:14 PM -0400 Art Weil <[log in to unmask]>
wrote:r
> RARE SHELLS. "They aint no sech a thing as a rare shell. We jest aint
> a'found 'em." Billy Bob Burstein. We all know about the finding of
> the secret lair of gloria-maris. And we have seen other "rare" shells
> ( Cy. tueleri, aurantium) change from rare to uncommon. What we'd like
> to know if there are any other stories about the finding of secret
> hiding places. Conversely, what shells have like O. porphyria (sp)
> gone from common to uncommon or to rare. I suppose the Manaus green
> tree snail might fit in. Q-man
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