Primary references

• Jörger, K.M., Stöger, I., Kano, Y., Fukuda, H., Knebelsberger, T. & Schrödl, M. 2010. On the origin of Acochlidia and other enigmatic euthyneuran gastropods, with implications for the systematics of Heterobranchia. BMC Evolutionary Biology 10(1): 323. DOI: 10.1186/1471-2148-10-323 Reference page. 

Additional references

• Schrödl, M., Jörger, K.M., Klussmann-Kolb, A. & Wilson, N.G. 2011. Bye bye 'Opisthobranchia'! A review on the contribution of Mesopsammic sea slugs to euthyneuran systematics. Thalassas 27(2): 101–112. Reference page. 
• Kocot, K.M., Halanych, K.M. & Krug, P.J. 2013. Phylogenomics supports Panpulmonata: Opisthobranch paraphyly and key evolutionary steps in a major radiation of gastropod molluscs. Molecular Phylogenetics and Evolution 69(3): 764–771. DOI: 10.1016/j.ympev.2013.07.001

• 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: 10.4002/040.061.0201 Reference page.