Abstract
Brachiopods of the orders Strophomenida, Orthotetida, and Athyridida from the late middle Frasnian–early Famennian interval(hassitotriangularisconodont zones) in the Namur-Dinant Basin (southeastern margin of Laurussia; southern Belgium) are described. Nine genera and subgenera represented by 12 species are recognized here. One new genus,Retrorstrophia, and one new species,Douvillina area, are erected.Crinisarina stainbrookiis proposed to solve the homonymy betweenC. reticulata(Gosselet, 1877) andCleiothyridina reticulataStainbrook, 1947, the type species ofCrinisarinaCooper and Dutro, 1982. A lectotype is selected and illustrated forC. reticulata.A new name is also proposed forAthyris reticulataChen and Xu, 2000, which is assigned here toCrinisarina: C. shashishanensisnom. nov. In southern Belgium, the last representatives of the families Douvillinidae and Leptostrophiidae (Strophomenida) are from the UpperrhenanaZone (late Frasnian). Athyridid brachiopods, especially the representatives of the subfamily Cleiothyridininae constituted a significant part of the early Famennian recovery faunas with spiriferids and rhynchonellids, just after the late Frasnian mass extinction.
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