Samurai Posted May 7 Share Posted May 7 (edited) Location: Missouri Period: Pennsylvanian Formation: Iola Formation (Raytown? Member) Hi, I came across this odd find about a year ago from the Iola rockpile I used to hunt but never got time to post it. I at first thought it was bird poop but that was until I noticed an encrusting bryozoan on the fossil itself. These are not common occurrences from what I've noticed. I sent this to Missourian yesterday and he noted the odd sinusoid and nonsegmented nature of the fossil. He wasn't sure but his best guess was sponge. I have not really seen anything like it Here they are in relation to one another. I've found 3 so far in this chunk with the two largest pictured above. Edited May 7 by Samurai Link to comment Share on other sites More sharing options...
Rockwood Posted May 7 Share Posted May 7 Worm tube seems likely to me. They are sometimes preserved as steinkerns. The encrusted area could be a remnant of a tube. 1 Link to comment Share on other sites More sharing options...
TqB Posted May 8 Share Posted May 8 7 hours ago, Rockwood said: Worm tube seems likely to me. They are sometimes preserved as steinkerns. The encrusted area could be a remnant of a tube. It won't be a serpulid worm tube; the earliest definite ones are Triassic with possible late Permian. So one of the enigmatic lookalikes maybe (microconchids etc. though it's rather large for a microconchid). A good account of them here: https://www.researchgate.net/publication/269704428_Written_in_stone_History_of_serpulid_polychaetes_through_time 2 Tarquin Link to comment Share on other sites More sharing options...
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