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The distribution of ostracods across the Frasnian/Famennian boundary in the Schmidt quarry is documented and all the benthonic species figured. Eighty per cent of the Frasnian ostracods disappeared close to this boundary, and all myodocopid species (Entomozoacea and Cypridinacea) were exterminated. The recovery in the Famennian seems to have been slow and gradual, and twelve lazarus species have been...