Paleontological Journal

, Volume 46, Issue 1, pp 1–11 | Cite as

A new metazoan from the Vendian of the White Sea, Russia, with possible affinities to the ascidians

  • M. A. Fedonkin
  • P. Vickers-RichEmail author
  • B. J. Swalla
  • P. Trusler
  • M. Hall


Two specimens recovered from late Neoproterozoic shallow marine sediments of northern Russia may be the oldest known ascidians. Dated at around 555 Ma, these, together with the younger Ausia from the Nama Group in southwestern Africa, are probably relatives of these invertebrate chordates, which have a deep time origin predicted by molecular studies.


Ediacaran Vendian chordate ancestor ascidian tunicates Russia Namibia 


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Copyright information

© Pleiades Publishing, Ltd. 2012

Authors and Affiliations

  • M. A. Fedonkin
    • 1
    • 2
    • 3
  • P. Vickers-Rich
    • 1
    • 3
    Email author
  • B. J. Swalla
    • 4
  • P. Trusler
    • 3
  • M. Hall
    • 3
  1. 1.Borissiak Paleontological InstituteRussian Academy of ScienceMoscowRussia
  2. 2.Geological InstituteRussian Academy of SciencesMoscowRussia
  3. 3.Monash UniversityVictoriaAustralia
  4. 4.238 Kincaid HalUniversity of WashingtonSeattleUSA

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