Polar Biology

, Volume 24, Issue 2, pp 122–126 | Cite as

Rosgorgia inexspectata, new genus and species of Subergorgiidae (Cnidaria, Octocorallia) from off the Antarctic Peninsula

  • Pablo J. López-González
  • Josep-Maria Gili


The family Subergorgiidae comprises two genera, Subergorgia with three species and Annella with two species. All the previously known species are distributed in tropical and subtropical waters from the northern Red Sea to the central Pacific. The presence of a subergorgiid in Antarctic waters could support the hypothesis that at least part of the Antarctic fauna has its origin in the Cretaceous period, when Antarctica was part of the Gondwana continent. The new genus Rosgorgia with the new species inexspectata is placed in the family Subergorgiidae by the presence of smooth, fusiform and often anastomosing needles in the axis, wart spindles in the coenenchyme, and coelenteric cavities of polyps only present in the coenenchyme. The genus Rosgorgia differs from Subergorgia and Annella by the presence of tuberculate rods in the axis. It is further distinguished from Annella by the absence of double-disk sclerites in the coenenchyme, and not anastomosing branches.


Cretaceous Gondwana Antarctic Peninsula Antarctic Water Subtropical Water 
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Copyright information

© Springer-Verlag Berlin Heidelberg 2001

Authors and Affiliations

  • Pablo J. López-González
    • 1
  • Josep-Maria Gili
    • 2
  1. 1.Laboratorio de Biologa Marina, Facultad de Biología, Universidad de Sevilla, Reina Mercedes 6, 41012 Sevilla, Spain e-mail: Fax: +34-954-233480ES
  2. 2.Instituto de Ciencias del Mar, C.S.I.C., Plaça del Mar s/n, 08039 Barcelona, SpainES

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