A new metazoan from the Vendian of the White Sea, Russia, with possible affinities to the ascidians
Abstract
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.
- Publication:
-
Paleontological Journal
- Pub Date:
- January 2012
- DOI:
- Bibcode:
- 2012PalJ...46....1F
- Keywords:
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- Ediacaran;
- Vendian;
- chordate ancestor;
- ascidian tunicates;
- Russia;
- Namibia