PRK Posted May 19, 2015 Share Posted May 19, 2015 (edited) A friend was out collecting locally and ran across this cool fossil. Ive been collecting local Oligocene for quite a few years now and this is a first. He gave it to me but I still have no ideas. Any opinions? Edited May 21, 2015 by PRK Link to comment Share on other sites More sharing options...
grandpa Posted May 19, 2015 Share Posted May 19, 2015 Trackway of a "thingy" with a gimp leg? Link to comment Share on other sites More sharing options...
Auspex Posted May 19, 2015 Share Posted May 19, 2015 Does it follow a bedding plane? Is this as-found, or was it prepped-out (ie: could it have been made by in-fauna)? "There has been an alarming increase in the number of things I know nothing about." - Ashleigh Ellwood Brilliant “Try to learn something about everything and everything about something.” - Thomas Henry Huxley >Paleontology is an evolving science. >May your wonders never cease! Link to comment Share on other sites More sharing options...
fossilized6s Posted May 19, 2015 Share Posted May 19, 2015 Maybe bivalve trails/burrows? ~Charlie~ "There are those that look at things the way they are, and ask why.....i dream of things that never were, and ask why not?" ~RFK ->Get your Mosasaur print ->How to spot a fake Trilobite ->How to identify a CONCRETION from a DINOSAUR EGG Link to comment Share on other sites More sharing options...
PRK Posted May 19, 2015 Author Share Posted May 19, 2015 I can't be sure about a "bedding plane" as it is as found on the outside of a chunk of naturally weathered resistant lithified rock and found as a random piece of float Link to comment Share on other sites More sharing options...
Auspex Posted May 19, 2015 Share Posted May 19, 2015 At a couple of the edges, the marks seem to 'wrap-around' (and indeed are embedded); being a naturally weathered piece, it seems likely that the maker was burrowing through sediment, rather than traversing it. I think that a burrowing bivalve is as good a guess as any, and better than most. "There has been an alarming increase in the number of things I know nothing about." - Ashleigh Ellwood Brilliant “Try to learn something about everything and everything about something.” - Thomas Henry Huxley >Paleontology is an evolving science. >May your wonders never cease! Link to comment Share on other sites More sharing options...
PRK Posted May 25, 2015 Author Share Posted May 25, 2015 Any other opinions? Link to comment Share on other sites More sharing options...
Plantguy Posted May 25, 2015 Share Posted May 25, 2015 Hey Paul, what a really neat trace. Maybe Scott who has helped me with ichnos has some additional ideas.... Im definitely no ichnoguy but they do intrigue me. For what its worth I initially thought they looked kind of symmetrical internally as if some arthropod/legs was/were plowing along but with more pondering and closer inspection and seeing what the others have said it looks like whatever it was plodded along in one direction and then possibly even reversed its course and came back adjacent to the initial burrow? Hoping someone else with some other knowledge/experience will chime in...I would love to know for sure. I did see this diagram online that has an example (Laminites) that is somewhat similar to the structure but someone who has more knowledge should make that determination if its even in the right ballpark. https://kuscholarworks.ku.edu/bitstream/handle/1808/4061/umi-ku-2328_1.pdf;jsessionid=3A2F26DDC6A04C3B4AED0D85BDAF0153?sequence=1 Cool example...hoping someone can offer more about its creator and its actual ID... Regards, Chris 1 Link to comment Share on other sites More sharing options...
PRK Posted May 25, 2015 Author Share Posted May 25, 2015 (edited) Thank you Chris, and i think it should be kept in mind that these patterns are Oligocene. Edited May 25, 2015 by PRK Link to comment Share on other sites More sharing options...
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