Friday, January 27, 2012

[Geology2] 'Animal embryo' fossils are actually microbes

'Animal embryo' fossils are actually microbes (Update) [USA], December 22, 2011

Tiny fossils that scientists have thought for decades were the embryos
of the earliest animals ever found have turned out to be the remains of
much simpler microbial organisms. In a Science paper that's likely to
dismay many palaeontologists, an international team of researchers
describe how they used X-rays from a specialised particle accelerator to
model the internal structure of hundreds of the 580-million-year-old
microfossils in three dimensions. The results left little doubt that the
fossils are from single-celled organisms of an evolutionary grade that
came before complex, multi-cellular animals.


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