Paleonet: Recently extinct marine bivalves and arthropods?

[Thomas Hegna]

All,
   I'm having a debate with someone about appropriate indicators for our recent biodiversity crisis (extinction at taxonomically high levels vs. taxonomically low levels). They made the claim that no marine bivalve or marine arthropod genus has gone extinct in the last 500 years. I think they are unintentionally cherry-picking (but I understand why--they want to ultimately compare this to the paleobiology database, which was originally focused on marine, shelly organisms). The "Save the Crabs, Then Eat 'Em" campaign is much less well known than the "Save the Whales" campaign, sadly. But, I do not know if it is true. Can any of you think of a recently extinct marine arthropod or bivalve genus? I suspect this is a case of absence of evidence does not necessarily mean evidence of absence.
Best,
Tom








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Thomas A. Hegna, Ph.D
Assistant Professor
https://sites.google.com/site/thehegnalab/
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Department of Geology and Environmental Sciences
SUNY Fredonia
118 Houghton Hall
280 Central Avenue
Fredonia, NY  14063
USA
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