[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]

Re: Precambrian Embryos

Chris Clowes has some good detailed background info:


On 9/11/04 6:46 am, "Richard W. Travsky" <rtravsky@uwyo.edu> wrote:

> Blacksburg, Va., November 3, 2004 -- In 1998, Shuhai Xiao and colleagues
> reported finding thousands of 600-million-year-old embryo microfossils in
> the Neoproterozoic Doushantuo Formation, a fossil site near Weng''an,
> South China (Xiao, S., Zhang, Y., and Knoll, A.H., 1998,
> "Three-dimensional preservation of algae and animal embryos in a
> Neoproterozoic phosphorite," Nature, v. 391). Within the egg cases they
> examined at that time, they discovered animals in the first stages of
> development  from a single cell to only a few dozen cells. "The cellular
> preservation is amazing," said Xiao, assistant professor of geosciences in
> the College of Science at Virginia Tech.