Arthropod Tracks and Burrows

Pr0teusUnbound

GPO
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Nov 6, 2012
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a couple of weeks ago i found some breaker rock containing what appears to be a great number of trace fossils. there appear to be at least 4 different kinds strew throughout the carbonaceous layers of tan dolomite. heres a piece of what looks like the ichnogenus Cruziana:

overview

cross section
 

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these next 3 might be arthropod ichnos or plant cast/molds:



 

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1. 2.

3.
 

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the last type is large, tubular, and apparently free of the carbonaceous lamina. it must have been made by a large trilobite (Phacops or Dipleura) or a large phyllocarid.

1. 2.

3. 4.
 

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