Gonyaulax verior Sournia This species has been reported as occurring in the phytoplankton in the vicinity of Helgoland and Sylt in the North Sea. Data compiled by Mona Hoppenrath.
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From the collection
Helgoland phytoplankton species list
|Description of Gonyaulax verior: Cells have a triangular epitheca and two, long posterior spines extending from a square antapex. The sides of the epitheca are almost straight leading to a pronounced apical horn. The girdle is located slightly postmedian and displaced by approximately one girdle width. The sulcus is inconspicuous. The thecal plates are thin compared with other Gonyaulax species, but are covered with reticulations and longitudinal ridges. |