Salvador, Rodrigo Brincalepe. 2013. “The Fossil Pulmonate Snails of Sandelzhausen (Early/Middle Miocene, Germany): Succineidae, Testacelloidea and Helicoidea”. Zootaxa 3721 (2). Auckland, New Zealand:157–171. https://doi.org/10.11646/zootaxa.3721.2.3.