Exploring the basal topology of the heteronemertean tree of life: establishment of a new family, along with turbotaxonomy of Valenciniidae (Nemertea: Pilidiophora: Heteronemertea) Author Kajihara, Hiroshi Author Abukawa, Shushi Author Chernyshev, Alexei V. text Zoological Journal of the Linnean Society 2022 196 503 548 journal article 10.1093/zoolinnean/zlac015 372f8265-c53c-43fa-9448-07d5a58d311f 0024-4082 7037958 78C56409-FCCF-4116-8D8C-FF66B247C56C OXYPOLELLA ALBA BERGENDAL, 1903 Oxypolella alba Bergendal, 1903: 144–146 ; Strand et al. , 2010: 114–115 . Sequence: AF103767 , 16S (484 bp), determined by Sundberg & Saur (1998) from a specimen collected on the Swedish west coast . Distribution: Sweden ( Bergendal, 1903 ; Sundberg & Saur, 1998 ). Remarks: Strand et al. (2010: 115) summarized the species with, ‘Length up to 5 cm . Body white and glossy, circular in cross section, not tapering posteriorly (apex rounded), typically contracted and held in an arched posture. Skin thick, wax-like and slightly wrinkled. Head eye-less and pointed, without horizontal lateral cephalic slits, but demarcated by a transverse furrow encircling the body. So far only recorded from one mud bottom site off the Swedish west coast. Biology and distribution otherwise unknown.’