Tenticospirifer sp.

Baliński, Andrzej, 2002, Frasnian-Famennian brachiopod extinction and recovery in southern Poland, Acta Palaeontologica Polonica 47 (2), pp. 289-305 : 303

? Tenticospirifer sp.

Material.—One fragment of the conical ventral valve from the lowest bed (set I) of trench Z−17.

Remarks.—The species is probably conspecific with the Middle and Late Frasnian specimens of the Dębnik anticline described earlier by Baliński (1979) as T. cyrtiniformis (Hall and Whitfield, 1872) . According to the recent revision of Tenticospirifer by Ma and Day (2000) the American species Spirifera cyrtinaformis Hall and Whitfield belongs to the genus Conispirifer Lyashenko. The American species as well as other members of Conispirifer differ from Tenticospirifer by having poorly defined to obsolescent fold and sulcus ( Ma and Day 2000: 456). The catacline ventral interarea, well−defined fold and sulcus and fewer medial plications of the specimens from Dębnik may represent a species of Tenticospirifer .