Schematic intestine forms observed in Potamolithus species from Alto Ribeira karst area, Southeastern Brazil. Abapertural view.

 
 
  Part of: Bichuette ME, Trajano E (2018) Diversity of Potamolithus (Littorinimorpha, Truncatelloidea) in a high-diversity spot for troglobites in southeastern Brazil: role of habitat fragmentation in the origin of subterranean fauna, and conservation status. Subterranean Biology 25: 61-88. https://doi.org/10.3897/subtbiol.25.23778