Jdeutsch Posted April 9, 2012 Share Posted April 9, 2012 Do skolithos first turn up in Cambrian strata? Are there precambrian skolithos? Are these features found in all geologic ages? How many types of creatures are responsible for these trace fossils? Link to comment Share on other sites More sharing options...
cgodwin37 Posted April 9, 2012 Share Posted April 9, 2012 (edited) Created by Polychaetes and other other annelids as dwelling structures. One of the more simple, and common, traces. I believe they are found in almost every Phanerozoic period. Edited April 9, 2012 by cgodwin37 Link to comment Share on other sites More sharing options...
thanatocoenosis Posted April 9, 2012 Share Posted April 9, 2012 Yes, biotubation is specific to the Cambrian, and later. 2012 NCAA Collegiate Round Ball Champs; and in '98, '96, '78, 58, '51, '49, and '48, too. Link to comment Share on other sites More sharing options...
squalicorax Posted April 9, 2012 Share Posted April 9, 2012 here is some fun reading on the Agronomic Revolution http://en.wikipedia.org/wiki/Cambrian_substrate_revolution My Flickr Page of My Collection: http://www.flickr.com/photos/79424101@N00/sets Link to comment Share on other sites More sharing options...
Jdeutsch Posted April 10, 2012 Author Share Posted April 10, 2012 Great wiki link- really interesting I was looking for trilobites in Cambrian strata over the weekend and everything I picked up was riddled with tunnels. The wiki article basically deals with the concepts I was wondering about. Link to comment Share on other sites More sharing options...
squalicorax Posted April 10, 2012 Share Posted April 10, 2012 Those sandstones have Locally abundant trilobites. here a paper that might help you out. cedaria wisconsin.pdf My Flickr Page of My Collection: http://www.flickr.com/photos/79424101@N00/sets Link to comment Share on other sites More sharing options...
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