Taxon - Odkazy a literatura
Boll, Piter Kehoma; Amaral, Silvana Vargas; Leal-Zanchet, Ana Maria (2019): Two new land planarian species (Platyhelminthes: Tricladida: Geoplanidae) from protected areas in southern Brazil, Zootaxa. 4664 (4): 535–550 [jako Cratera obsidiana Amaral, Boll & Leal-Zanchet, 2019]