Fossil steroids record the appearance of Demospongiae during the Cryogenian period

@article{Love2009FossilSR,
  title={Fossil steroids record the appearance of Demospongiae during the Cryogenian period},
  author={Gordon D Love and Emmanuelle Grosjean and Charlotte Stalvies and David A Fike and John P. Grotzinger and Alexander S Bradley and Amy Elizabeth Kelly and Maya Bhatia and William Meredith and Colin Snape and Samuel A. Bowring and Daniel J Condon and Roger Everett Summons},
  journal={Nature},
  year={2009},
  volume={457},
  pages={718-721}
}
The Neoproterozoic era (1,000–542 Myr ago) was an era of climatic extremes and biological evolutionary developments culminating in the emergence of animals (Metazoa) and new ecosystems. Here we show that abundant sedimentary 24-isopropylcholestanes, the hydrocarbon remains of C30 sterols produced by marine demosponges, record the presence of Metazoa in the geological record before the end of the Marinoan glaciation (∼635 Myr ago). These sterane biomarkers are abundant in all formations of the… CONTINUE READING
BETA

From This Paper

Figures, tables, and topics from this paper.

Citations

Publications citing this paper.
SHOWING 1-10 OF 160 CITATIONS, ESTIMATED 26% COVERAGE

160 Citations

01020'10'12'14'16'18
Citations per Year
Semantic Scholar estimates that this publication has 160 citations based on the available data.

See our FAQ for additional information.

References

Publications referenced by this paper.
SHOWING 1-10 OF 34 REFERENCES

Pulsed oxidation and biological evolution in the Ediacaran ocean

  • K. A. McFadden
  • Proc . Natl Acad . Sci . USA
  • 2008

The Rise and Fall of the Ediacaran Biota (eds Vickers-Rich, P

  • E. A. Sperling, K. J. Peterson, D. Pisani
  • (Geological Society Special Publications,
  • 2007

Testing ecological predictions of molecular clocks against the Proterozoic fossil record

  • K. J. Peterson, Butterfield, N. J. Origin of the Eumetazoa
  • Proc. Natl Acad. Sci. USA 102, 9547–9552
  • 2005

Similar Papers

Loading similar papers…