Map data: Natural Earth. Free vector and raster map data @ naturalearthdata.com. Downloaded 5 August 2014. Public domain. (Natural Earth I with Shaded Relief and Water, Admin 0 – Boundary Lines.)
Range Data: Madhyastha A. (2014). "Semisulcospira libertina". The IUCN Red List of Threatened Species. Version e.T166281A1127046. <www.iucnredlist.org>. Downloaded on 26 November 2015.
Author
Natural Earth.
IUCN Red List of Threatened Species, species assessors and the authors of the spatial data.
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