Jason Stallings Posted December 4, 2022 Share Posted December 4, 2022 Link to comment Share on other sites More sharing options...
minnbuckeye Posted December 4, 2022 Share Posted December 4, 2022 They have the general look of the Ordovician bryozoa called Prasapora. But unfortunately I do not see the finer diagnostic features that would confirm this possibility. So I lean towards rocks, not fossils. Link to comment Share on other sites More sharing options...
TqB Posted December 4, 2022 Share Posted December 4, 2022 Possibly the trace fossil Conostichus. 2 Tarquin Link to comment Share on other sites More sharing options...
minnbuckeye Posted December 4, 2022 Share Posted December 4, 2022 @TqB Conostichus is a new name to me. They look surprisingly similar to Prasapora from a distance! Did they occur back in the Ordovician? @Jason Stallings, do you know the formation these specimens came from? Link to comment Share on other sites More sharing options...
Jason Stallings Posted December 4, 2022 Author Share Posted December 4, 2022 I found them on different job sites around the fort Smith area. I don't know anything thing else about them. Over the years I've collected these. Thanks for any information. Here's another larger one. Link to comment Share on other sites More sharing options...
TqB Posted December 4, 2022 Share Posted December 4, 2022 1 hour ago, minnbuckeye said: @TqB Conostichus is a new name to me. They look surprisingly similar to Prasapora from a distance! Did they occur back in the Ordovician? @Jason Stallings, do you know the formation these specimens came from? A cursory search finds this paper with possible Ordovician specimens. Middle Ordovician Trace Fossils…Eastern Canada And this blog has Arkansas (Ozarks) specimens but doesn't give an age. https://arkansasgeological.wordpress.com/2016/10/06/geo-pic-of-the-week-conostichus-trace-fossils/ 2 1 Tarquin Link to comment Share on other sites More sharing options...
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