Template:Cambrian substrate revolution

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Revision as of 15:17, 17 July 2008 by imported>Philcha (new version with more text and variable float)
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Before:
After:
Sessile organism
anchored in mat
Animal grazing
on mat
Animals embedded
in mat
Animals
burrowing
in bottom
of mat
    =Microbial mat
Firm, layered, anoxic, sulphidic substrate
Animals moving on / in
surface of sea-floor
Loose,
oxygenated
upper substrate
with
burrowing
animals