flipper559 Posted June 24, 2020 Share Posted June 24, 2020 Hunting the Mazon Creek last weekend, my wife found this piece in the creek while hunting for Mazon Creek Fossils. What do you think ?? Any help appreciated !! Thanks for checking it out !! Phil Link to comment Share on other sites More sharing options...
Fossildude19 Posted June 24, 2020 Share Posted June 24, 2020 Looks like either a crinoid stem (Platycrinites ?) or a straight shelled or orthocone nautiloid. Pictures are a bit small to tell which one. 5 Tim - VETERAN SHALE SPLITTER VFOTM --- APRIL - 2015 __________________________________________________ "In every walk with nature one receives far more than he seeks." John Muir ~ ~ ~ ~ ><))))( *> About Me Link to comment Share on other sites More sharing options...
Herb Posted June 24, 2020 Share Posted June 24, 2020 looks like wood pith section. 2 "Absence of evidence is not evidence of absence"_ Carl Sagen No trees were killed in this posting......however, many innocent electrons were diverted from where they originally intended to go. " I think, therefore I collect fossils." _ Me "When you have eliminated the impossible, whatever remains, however improbable, must be the truth."__S. Holmes "can't we all just get along?" Jack Nicholson from Mars Attacks Link to comment Share on other sites More sharing options...
flipper559 Posted June 24, 2020 Author Share Posted June 24, 2020 8 hours ago, Fossildude19 said: Looks like either a crinoid stem (Platycrinites ?) or a straight shelled or orthocone nautiloid. Pictures are a bit small to tell which one. Thanks Tim, Here is a larger picture. The limestone slab is just over a foot long. The exposed item is 5 inches long, and about an inch wide. Unusual to find when collecting Mazon Creek concretions from the creek. In some areas along the creek are exposures of Francis Creek shale ( that is where the M C concretions come out of), and limestone on top of the shale. I expect that is where this piece came from. I guess I should have included Illinois as the location. Thanks again for the help !! Phil Link to comment Share on other sites More sharing options...
Fossildude19 Posted June 24, 2020 Share Posted June 24, 2020 Phil, Can you tell if it tapers down from one side to another? I can't tell from the angle of this photo. If it tapers in width at one end, it would be an orthocone cephalopod. My money would be on crinoid stem, though. 1 Tim - VETERAN SHALE SPLITTER VFOTM --- APRIL - 2015 __________________________________________________ "In every walk with nature one receives far more than he seeks." John Muir ~ ~ ~ ~ ><))))( *> About Me Link to comment Share on other sites More sharing options...
flipper559 Posted June 24, 2020 Author Share Posted June 24, 2020 Tim, There is a very slight taper, only an eighth inch. In my very limited knowledge of this type of fossil , I was thinking Cephalopod. I didnt know crinoids could be this big. I did know without question, it wasn't a Mazon Creek fossil !! Thank you sir !! Phil Link to comment Share on other sites More sharing options...
Plax Posted June 24, 2020 Share Posted June 24, 2020 looks like quarried dolomite to me so probably a silurian marine fossil? 1 Link to comment Share on other sites More sharing options...
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