A–C GPS stations on Ngeruktabel Island, Palau, demarcating the trail to the German lighthouse, along which the type series of Sphendone insolita was collected.

  Part of: Slapcinsky J, Kraus F (2016) Revision of Partulidae (Gastropoda, Stylommatophora) of Palau, with description of a new genus for an unusual ground-dwelling species. ZooKeys 614: 27-49. https://doi.org/10.3897/zookeys.614.8807