11 Cerianthus incertus Carlgren, 1932

Cerianthus danielsseni Levinsen, 1893: 398; Carlgren 1896: 174; Roule, 1904: 792; Kingsley 1904: 347; Roule 1905: 85-89; Pax 1910: 167; Carlgren 1912a: 5; Carlgren 1942: 71

Cerianthus incertus Carlgren, 1932: 255; Molodtsova 2000: 14-15; Molodtsova 2001b: 913; Molodtsova 2014: 100

Type locality.

North Sea (not specified).

Distribution.

Arctic Ocean, Norway, and Iceland, at 650-1185 m depth.

Remarks.

Cerianthus incertus has a complicated taxonomic history and was originally described as C. danielsseni by Levinsen (1893) based only on its external morphology. Carlgren (1896) discussed this problem and, later, Roule (1905), based on specimens from nearby locations, described a new species using the same name. However, at this point, the name C. danielsseni became a homonym and was no longer available according to the rules of the International Commission on Zoological Nomenclature (ICZN). Thus, Carlgren (1932) suggested a new name ( Cerianthus incertus) to solve both situations. Molodtsova (2014) postulated that C. incertus is a junior synonym of C. vogti, but there are no data available to confirm this hypothesis. Despite discussions on the past taxonomic confusion, this species is still understudied.

Type material.

Not found in this study.