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

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 hav...

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Bibliographic Details
Published in:Paleontological Journal
Main Authors: Fedonkin, M. A., Vickers-Rich, P., Swalla, B. J., Trusler, P., Hall, M.
Other Authors: Swinburne University of Technology
Format: Article in Journal/Newspaper
Language:unknown
Published: Pleiades Publishing Ltd 2012
Subjects:
White Sea
Online Access:http://hdl.handle.net/1959.3/435177
https://doi.org/10.1134/S0031030112010042
Description
Summary: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.

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