2010年10月11日

Trace fossil?

We found these trace fossils in our field work. But I don't know what their paleo-oxygenation facies implications?
Here are the photos.
Age: Middle Permian
Place: South China
Depositional environment: shallow marine carbonate platform, because much green algae is present.
 Dasycladalean alga 
 Trace fossil 1
Trace fossil 2