One lineage of the Ellobioidea, the Carychiidae has successfully accomplished a complete transition onto land.[3] Extant carychiid snails inhabit aphotic and permanently wet epigean (Carychium) or subterranean (Zospeum) environments throughout their Holarctic distribution.[3] This dramatic shift from a marine to a terrestrial habitat has occurred independently of the stylommatophoran land-snails of the Eupulmonata.[3]
^ abcdeWeigand A. M., Jochum A., Slapnik R., Schnitzler J., Zarza E. & Klussmann-Kolb A. (2013). "Evolution of microgastropods (Ellobioidea, Carychiidae): integrating taxonomic, phylogenetic and evolutionary hypotheses". BMC Evolutionary Biology13: 18.doi:10.1186/1471-2148-13-18.
^ abJochum, A., Ruthensteiner, B., Kampschulte, M., Martels, G., Kneubühler, J., & Favre, A. (2018). Fulfilling the taxonomic consequence after DNA Barcoding: Carychium panamaense sp. n.(Eupulmonata, Ellobioidea, Carychiidae) from Panama is described using computed tomographic (CT) imaging. ZooKeys, (795), 1.(PDF)
^ abJochum, A., Weigand, A. M., Bochud, E., Inäbnit, T., Dörge, D. D., Ruthensteiner, B., ... & Kampschulte, M. (2017). Three new species of Carychium OF Müller, 1773 from the Southeastern USA, Belize and Panama are described using computer tomography (CT)(Eupulmonata, Ellobioidea, Carychiidae). ZooKeys, (675), 97.(PDF)
^ abJochum, A., Prozorova, L., Sharyi-ool, M., & Páll-Gergely, B. (2015). A new member of troglobitic Carychiidae, Koreozospeum nodongense gen. et sp. n.(Gastropoda, Eupulmonata, Ellobioidea) is described from Korea. ZooKeys, (517), 39.(PDF)
^ abInäbnit, T., Jochum, A., Kampschulte, M., Martels, G., Ruthensteiner, B., Slapnik, R., ... & Neubert, E. (2019). An integrative taxonomic study reveals carychiid microsnails of the troglobitic genus Zospeum in the Eastern and Dinaric Alps (Gastropoda, Ellobioidea, Carychiinae). Organisms Diversity & Evolution, 19(2), 135-177.
^ abJochum, A., Prieto, C. E., Kampschulte, M., Martels, G., Ruthensteiner, B., Vrabec, M., ... & de Winter, A. J. (2019). Re-evaluation of Zospeum schaufussi von Frauenfeld, 1862 and Z. suarezi Gittenberger, 1980, including the description of two new Iberian species using Computer Tomography (CT)(Eupulmonata, Ellobioidea, Carychiidae). ZooKeys 835: 65–86.(PDF)
^ abJochum, A., De Winter, A. J., Weigand, A. M., Gómez, B., & Prieto, C. (2015). Two new species of Zospeum Bourguignat, 1856 from the Basque-Cantabrian Mountains, Northern Spain (Eupulmonata, Ellobioidea, Carychiidae). ZooKeys, (483), 81.(PDF)
^ abJochum, A., Slapnik, R., Klussmann-Kolb, A., Páll-Gergely, B., Kampschulte, M., Martels, G., ... & Weigand, A. M. (2015). Groping through the black box of variability: An integrative taxonomic and nomenclatural re-evaluation of Zospeum isselianum Pollonera, 1887 and allied species using new imaging technology (Nano-CT, SEM), conchological, histological and molecular data (Ellobioidea, Carychiidae). Subterranean Biology, 16, 123-165.
^ abWeigand, A. (2013). New Zospeum species (Gastropoda, Ellobioidea, Carychiidae) from 980 m depth in the Lukina Jama–Trojama cave system (Velebit Mts., Croatia). Subterranean Biology, 11, 45.
^ abJochum, A., Weigand, A. M., Slapnik, R., Valentinčič, J., & Prieto, C. E. (2012). The microscopic ellobioid, Zospeum Bourguignat, 1856 (Pulmonata, Ellobioidea, Carychiidae) makes a big debut in Basque Country and the province of Burgos (Spain). MalaCo, 8, 400-403.(PDF)
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