Discohelix ( Pseudomalaxis ) calculiformis Boettger, 1906: 138 Discohelix calculiformis Dunker, 1847 Pseudomalaxis boettgeri Cossmann, 1915: 143 Pseudomalaxis boettgeri Cossmann Zilch 1934: 219 A revision of the Neogene Cancellariid Gastropods of the Paratethys Sea 3472 Harzhauser, Mathias Landau, Bernard Zootaxa 2012 2012-09-07 3472 1 71 7PJWP Blainville 1827 [151,320,1297,1323] Gastropoda Cancellariidae Trigonostoma Animalia Neogastropoda 54 55 Mollusca genus      Discohelix( Pseudomalaxis) calculiformis Boettger, 1906: 138[non  Discohelix calculiformis Dunker, 1847].   Pseudomalaxis boettgeriCossmann, 1915: 143, pl. 12, figs 22-24.    Pseudomalaxis boettgeriCossmann—  Zilch 1934: 219, pl. 7, fig. 22.   Type material.  syntype SMF  XII 2375a,  SMFFrankfurt ( Germany), CoŞteiu de Sus( Romania), Badenian ( Middle Miocene).   Discussion. Boettger (1906)described a juvenile cancellariid from the early Badenian of the Transylvanian Basin as  Discohelix calculiformis. This name was preoccupied for a Jurassic species described by Dunker (1847). Therefore, Cossmann (1915) proposed the replacement name  Pseudomalaxis boettgeri. The presence of faint columellar folds excludes a placement in the Architectonicidaeand consequently Petit & Harasewych (2005)included it in  Trigonostoma s.l.The available material does not allow clarifying the status of this species. The characteristic planorbiform early teleoconch is unlike that of any other known species and therefore we consider it a valid species, despite the very juvenile and fragmentary material available.   Distribution.A rare species, which is known so far only from the early Badenian of the Transylvanian Basin and the North Alpine Foreland Basin.  Paratethys—Badenian: Transylvanian Basin ( Romania: CoŞteiu de Sus), North Alpine Foreland Basin ( Austria: Grund; private collection of A. Breitenberger, Austria). [331,592,1495,1520] 2375-12 SMF 54 55 1 syntype SMF de Sus Germany CoSteiu de Sus Middle Miocene 54 55 1 syntype