Otala xanthodon (NMBE 549826), Moulouya, Morocco; A shell B situs C atrium and PP2 D penial chamber; D = 21.47 mm, H = 14.22 mm, situs length 37.23 mm (atrium-BCD). All photographs by Kneubühler, shell × 1.5.

 
 
  Part of: Kneubühler J, Hutterer R, Pfarrer B, Neubert E (2019) Anatomical and phylogenetic investigation of the genera Alabastrina Kobelt, 1904, Siretia Pallary, 1926, and Otala Schumacher, 1817 (Stylommatophora, Helicidae). ZooKeys 843: 1-37. https://doi.org/10.3897/zookeys.843.32867