WoRMS source details
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All the species have been obtained in sand from stations located at depths of more than 10 meters. In addition, Sphaerosyllis tetralix has been taken between tide-marks on different substrata. There follows a list of other syllids from a locality with Amphioxus-sand.
North Atlantic
Dioplosyllis Gidholm, 1962 (original description)
Dioplosyllis cirrosa Gidholm, 1962 (original description)
Eurysyllis brevipes (Hartmann-Schröder, 1956) accepted as Plakosyllis brevipes Hartmann-Schröder, 1956 (redescription)
Plakosyllis brevipes Hartmann-Schröder, 1956 (new combination reference)
Sphaerosyllis tetralix Eliason, 1920 accepted as Prosphaerosyllis tetralix (Eliason, 1920) (additional source)
Holotype MNHN POLY TYPE 721, geounit Roscoff, identified as Brania swedmarki Gidholm, 1962
Northeast Atlantic Ocean: Bloscon (Roscoff, France) [details]
Northeast Atlantic Ocean: Trenzen ar Skoden (Roscoff, France). [details]
Notheast Atlantic Ocean: France (Britanny: Bloscon; Château du Taureau; Trezen ar Skoden). [details]
Northeast Atlantic Ocean: west coast of Sweden (Öresund; Kattegat; Gullmarfjord); France (Bloscon, near Roscoff). [details]
The species is dedicated to Bertil Swedmark, Swedish Zoologist. [details]
The generic name Dioplosyllis is composed by the Greek prefix di-, meaning 'two', 'twice', or 'double', the Greek ... [details]
The specific epithet cirrosa refers to the extremely long dorsal cirri of the species (about 3 mm long), very ... [details]
Submerged dune made of shells and shell fragments, 45-60 m depth. [details]
Mesopsammic. In sediments of 'Amphioxus'-sand, sand with shells, and maërl. [details]
Mud and sand, more or less mixed and rich in organic matter, 'Amphioxus'-sand, shelly sand, among algae, tubes of ... [details]
Biggest part of specimens collected at Roscoff in February-March 1961 sexually mature, with long natatorial chaetae ... [details]
One mature female observed in February-March 1961 near Roscoff (France), with pink oocytes in the last 12 ... [details]
Natatorial chaetae observed in one female and one male during February-March 1961, near Roscoff. [details]
Northeast Atlantic Ocean, France, Brittany, Bloscon, near Roscoff (geocoordinates not provided, estimated with ... [details]
Northeast Atlantic Ocean, France, Brittany, Trezen ar Skoden, submerged dune near Roscoff. west Île de Batz ... [details]
Gidholm (1962: 255) stated that the holotype was deposited at the MNHN (Paris), but it is not referred in the ... [details]
