Valencinura Bergendal, 1902: 14

Kajihara, Hiroshi, Abukawa, Shushi & Chernyshev, Alexei V., 2022, Exploring the basal topology of the heteronemertean tree of life: establishment of a new family, along with turbotaxonomy of Valenciniidae (Nemertea: Pilidiophora: Heteronemertea), Zoological Journal of the Linnean Society 196, pp. 503-548 : 521

Valencinura Bergendal, 1902: 14 .

Type species: Valencinura bahusiensis Bergendal, 1902 , fixed by monotypy.

Diagnosis: Senz (1996: 48) altered Bergendal’s (1902) original concept of the genus and gave the following modified diagnosis (our translation): Heteronemertea with unbranched proboscis; proboscis with inner longitudinal, middle circular and outer longitudinal muscle layers, with none or two muscle crosses; head without horizontal lateral cephalic slits; cerebral organs not penetrating into blood vessels; cutis without connective tissue layer; caudal cirrus present or absent; preseptal circular muscles with central muscle cone (= bundle of radiating muscle fibres); foregut vascular network present; foregut with no or few subepithelial glands; brain without outer neurilemma; no neurochord cells; body-wall inner circular muscle layer in foregut region present as muscle cylinder; rhynchocoel extending nearly length of body; rhynchocoel wall not interwoven with body-wall muscles.