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Large Gene Study Questions Cambrian Explosion

Date:
January 21, 1999
Source:
Penn State Eberly College Of Science
Summary:
The ancestors of major groups of animal species began populating Earth more than 600 million years earlier than indicated by their fossil remains, according to the largest study on the subject using gene sequences, recently completed at Penn State. The research suggests that animals have been evolving steadily into different species for at least 1200 million years, which challenges a popular theory known as the Cambrian Explosion that proposes the sudden appearance of most major animal groups, known as phyla, 530 million years ago.

The ancestors of major groups of animal species began populating Earth more than 600 million years earlier than indicated by their fossil remains, according to the largest study on the subject using gene sequences, recently completed at Penn State. The research suggests that animals have been evolving steadily into different species for at least 1200 million years, which challenges a popular theory known as the Cambrian Explosion that proposes the sudden appearance of most major animal groups, known as phyla, 530 million years ago. A paper describing the research will be published in the January 22, 1999, issue of the Proceedings of the Royal Society of London (Series B) by Penn State Undergraduate Student Daniel Y.-C. Wang, Postdoctoral Fellow Sudhir Kumar, and Associate Professor of Biology S. Blair Hedges.


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The above story is based on materials provided by Penn State Eberly College Of Science. Note: Materials may be edited for content and length.


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Penn State Eberly College Of Science. "Large Gene Study Questions Cambrian Explosion." ScienceDaily. ScienceDaily, 21 January 1999. <www.sciencedaily.com/releases/1999/01/990121073459.htm>.
Penn State Eberly College Of Science. (1999, January 21). Large Gene Study Questions Cambrian Explosion. ScienceDaily. Retrieved April 18, 2014 from www.sciencedaily.com/releases/1999/01/990121073459.htm
Penn State Eberly College Of Science. "Large Gene Study Questions Cambrian Explosion." ScienceDaily. www.sciencedaily.com/releases/1999/01/990121073459.htm (accessed April 18, 2014).

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