Template:Cambrian substrate revolution
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Revision as of 09:14, 1 July 2008 by
imported>Philcha
(default caption; new annotation "Animals moving on / in ...")
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Before:
After:
Sessile
organism
anchored
in mat
Animal
grazing
on mat
Microbial mat
Firm, layered, anoxic, sulphidic substrate
Animals moving on / in
surface of sea-floor
Loose,
oxygenated
upper substrate
with
burrowing
animals
Cambrian substrate revolution
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