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ABSTRACT

Two hundred and fifty-three species from 38 genera in the Extinction Group families (Chrysalogoniidae, Glandulonodosariidae, Plectofrondiculariidae, Stilostomellidae, Ellipsoidinidae, Pleurostomellidae, Nodosariidae in part), are reviewed and illustrated, together with eight additional species that became extinct or declined dramatically during the Last Global Extinction. Twelve genera and 26 species are described as new (Anastomosa n.gen., A. boomgaarti n.sp., A. loeblichi n.sp., Cribroconica n.gen., Epelistoma n.gen., E. morgansi n.sp., Lotostomoides n.gen., L. jorisseni n.sp., L. schwageri n.sp., Scallopostoma n.gen., Glandulonodosaria colomi n.sp., G. lutzei n.sp., Fingerina n.gen., Grigelis schoenfeldi n.sp., Mucronina hornibrooki n.sp., M. resigae n.sp., Plectolingulina n.gen., Carchariostomoides n.gen., Caveastomella n.gen., C. caralpae n.sp., C. weinholzi n.sp., Siphonodosaria campana n.sp., S. kaihoi n.sp., S. robertsoni n.sp., Stilostomella? guptai n.sp., Strictocostella srinivasani n.sp., S. strongi n.sp., Toddostomella n.gen., Unidens n.gen., U. ishizakii n.sp., Ellipsoglandulina keyzeri n.sp., Ellipsoidella tappanae n.sp., Laterohiatus n.gen., Nodosarella kohli n.sp., N. nomurai n.sp., N. schroederadamsae n.sp., Obesopleurostomella n.gen., O. boltovskoyi n.sp., Ossaggittia n.gen., O. thomasae n.sp.). Three-hundred and seventy-three species and 20 genera are suppressed as subjective junior synonyms.

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