Oldest known fossil metazoans?

[Geoff Read]

> what is the age of the oldest known fossil metazoans (Kerr, 1999)?  Would
> it be the paper by Breyer et ali (1995) of the sediment-filled tubes from
> the Allamoore Formation of Texas, USA?  These were reported to be 1.4 to 1
> Ga (1.4 to 1 billion years old).

I do not know whether it is apropos to the above but the sediment-filled tubes
of giant Protozoan fossils, Bathysiphon, etc, have often been mistaken for
Metazoan (annelid) constructions. They occur at least from the early
Cambrian onwards according to:

Hannah, M. J., & H. J. Campbell. 1996. Torlessia mackayi and other foraminifera
from the Torlesse Terrane, New Zealand.— New Zealand journal of geology and
geophysics, 39:75-81.


--
  Geoff Read <g.read at niwa.cri.nz>