original description
Ehrenberg, C. G. (1828-1831). Animalia evertebrata exclusis Insectis. Series prima. In: F. G. Hemprich & C. G. Ehrenberg, <i>Symbolae physicae, seu icones et descriptiones Mammalium, Avium, Insectorum et animalia evertebra, quae ex itinere per Africam borealem et Asiam occidentalem studio nova aut illustrata redierunt</i>. 126 pp. (1831), 10 pls (1828)., available online at https://biodiversitylibrary.org/page/48517135 [details]
source of synonymy
Graff, L. von. (1905). Marine Turbellarien Orottavas und der Küsten Europas. <em>Zeitschrift fur wissenschaftlige Zoologie.</em> 83: 68-150. With 6 plates., available online at https://www.biodiversitylibrary.org/page/43242488
page(s): 102 [details]
From editor or global species database
Nomenclature Graff (1905, footnote on p.102) rightfully points out that the name Vortex Ehrenberg, 1831 is a junior synonym of Dalyellia Fleming, 1822. All species described within Vortex up to 1905 and that are indeed considered to belong to that genus by Graff (1905) were then automatically transferred to Dalyellia, with Graff (1905) as the authority of the new combination. [details]