Ostracods Prove That The Frasnian/Famennian Boundary Mass Extinction Was A Major And Abrupt Crisis

For the study of the Late Devonian mass extinction, probably the second largest during the Phanerozoic, more than 40,000 ostracods have been extracted from samples collected close to the Frasnian/Famennian boundary in principal reference sections all over the world. Their study shows that about 75% of all marine species disappeared abruptly close to this boundary.