keldeo072 Posted February 12, 2019 Share Posted February 12, 2019 Hey guys, I am fairly certain that this is a straight-shelled nautiloid cephlapod but this one is different from others I find. I find a lot of fragments from cephlapods in Cincinnati with only a few segments. This one seems like the whole shell, though it is 7.5 centimeters in length. Also one side has a bunch of holes which I am curious about. Any more info on this specimen would be much appreciated. Found in a creek so it has probably been weathered a lot. These next pictures are the top and bottom, (i dont know why they are flipped to the left) 1 Link to comment Share on other sites More sharing options...
KimTexan Posted February 12, 2019 Share Posted February 12, 2019 The little holes look like boring of some sort. I does look like a cephalopod of some kind. I don’t know the fossils from that area. @Herb may have some thoughts. 1 Link to comment Share on other sites More sharing options...
JesseKoz Posted February 13, 2019 Share Posted February 13, 2019 +1 on a straight-shelled nautiloid, can clearly see the siphuncle. Do you know the formation the fossil comes from? From some quick reading it could be from the Fairview, Great Lake or Bull Fork formations, or possibly another. Likely someone on the forum can save you the work below and might be able to visually identify without more information, but if you're interested in learning more check link below. 'Middle and Upper Ordovician Nautiloid Cephalopods of the Cincinnati Arch Region of Kentucky, Indiana and Ohio, U.S. Geological Survey Professional Paper 1066-P' might help you in working out which formation the fossil is from and possibly identifying the species. All the page numbers listed are the PDF page numbers, rather than the publications original page numbers. https://pubs.usgs.gov/pp/1066p/report.pdf Pg. 10-14: Lists and details the Ordovician strata exposed in the Cincinnati arch region of Kentucky, Indiana and Ohio. Pg. 17-24: Tables listing species of nautiloid cephalopods found across the different formations. Pg. 29 onwards: Details methodology of classifying nautiloid species, Figure 4, Pg. 31 and Figure 5, Pg. 32 contain useful information. 7 Link to comment Share on other sites More sharing options...
Peat Burns Posted February 13, 2019 Share Posted February 13, 2019 Beautiful specimen. Link to comment Share on other sites More sharing options...
Tidgy's Dad Posted February 13, 2019 Share Posted February 13, 2019 Nice find! Life's Good! Tortoise Friend. Link to comment Share on other sites More sharing options...
Herb Posted February 13, 2019 Share Posted February 13, 2019 very worn cephalopod "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...
The Amateur Paleontologist Posted February 13, 2019 Share Posted February 13, 2019 Not sure about the age/stratigraphy of the place where you found it, but the specimen reminds me a bit of the nautiloid Moorefieldoceras yochelsoni from the Early Carboniferous of Arkansas... Early Carbonif. Nautiloids from Arkansas -Christian Opalised fossils are the best: a wonderful mix between paleontology and mineralogy! Q. Where do dinosaurs study? A. At Khaan Academy!... My ResearchGate profile Link to comment Share on other sites More sharing options...
minnbuckeye Posted February 13, 2019 Share Posted February 13, 2019 2 hours ago, The Amateur Paleontologist said: Early Carbonif. Nautiloids from Arkansas Unfortunately Cincinnati geology is Ordovician and not Mississippian 2 Link to comment Share on other sites More sharing options...
howard_l Posted February 15, 2019 Share Posted February 15, 2019 Yes, Ordovician nautiloid, the hole on the side is the siphuncle, the location of the siphuncle will help with an identification. 1 Howard_L http://triloman.wix.com/kentucky-fossils Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now