Primary references

• Albers, J.C. [MS edited by von Martens, E.] 1860. Die Heliceen nach natürlicher Verwandtschaft systematisch geordnet. ed. 2. Engelmann: Leipzig. xviii + 359 pp.

Additional references

• Bouchet, P. & Rocroi, J.-P. 2005. Classification and nomenclator of gastropod families. Malacologia 47(1–2): 1–397. BHL Reference page. 
• Breure, A.S.H. 2011. Annotated type catalogue of the Orthalicoidea (Mollusca, Gastropoda) in the Royal Belgian Institute of Sciences, Brussels, with descriptions of two new species. ZooKeys 101: 1–50. DOI: 10.3897/zookeys.101.1133

• Breure, A.S.H. & Romero, P.E. 2012. Support and surprises: molecular phylogeny of the land snail superfamily Orthalicoidea using a three-locus gene analysis with a divergence time analysis and ancestral area reconstruction (Gastropoda: Stylommatophora). Archiv für Molluskenkunde 141(1): 1–20. DOI: 10.1127/arch.moll/1869-0963/141/001-020 Reference page. 

• Breure, A.S.H. 2013. Annotated type catalogue of the Orthalicoidea (Mollusca, Gastropoda) in the Museum für Naturkunde, Berlin. ZooKeys 279: 1–101. DOI: 10.3897/zookeys.279.4701 Reference page. 

• Bouchet, P., Rocroi, J.-P., Hausdorf, B., Kaim, A., Kano, Y., Nützel, A., Parkhaev, P., Schrödl, M., & Strong, E.E. 2017. Revised classification, nomenclator and typification of gastropod and monoplacophoran families. Malacologia 61(1–2): 1–526. DOI: 10.4002/040.061.0201Reference page. 

Links

• Orthalicoidea in the World Register of Marine Species