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Biology 22 Online
OpenStudy (tanya123):

- What were the synapsids? When were they most widespread? - Identify the therapsids. How were they related to mammals?

OpenStudy (tanya123):

@sunshao1

OpenStudy (anonymous):

http://en.wikipedia.org/wiki/Synapsid

OpenStudy (anonymous):

http://www.wisegeek.com/what-are-therapsids.htm

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