David Fankhauser Posted April 25, 2019 Share Posted April 25, 2019 These are not the largest specimens of this broad flat smooth dark fragment, but you can see some fragments in this sample collected from 9 mile creek just east of Cincinnati. Yes, that is a gorgeous pygidium, presumably from Flexicalimenes? Link to comment Share on other sites More sharing options...
daves64 Posted April 25, 2019 Share Posted April 25, 2019 Pictures? Accomplishing the impossible means only that the boss will add it to your regular duties. Link to comment Share on other sites More sharing options...
David Fankhauser Posted April 25, 2019 Author Share Posted April 25, 2019 Sorry, I am a rank newbie to this forum, and was I’m successful at getting the images posted. I subsequently resubmitted and the pictures were posted. Here are the two images which should’ve been with this initial postI’m successful at getting the images posted. I subsequently resubmitted and the pictures were posted. Here are the two images which should’ve been with this initial post. Link to comment Share on other sites More sharing options...
Rockwood Posted April 25, 2019 Share Posted April 25, 2019 Brachial valve of a leptaena ? Link to comment Share on other sites More sharing options...
Kane Posted April 25, 2019 Share Posted April 25, 2019 If you're referring to the smooth bit to the upper left of the larger Flexicalymene pygidium, I would guess those would be Isotelus fragments. 2 ...How to Philosophize with a Hammer Link to comment Share on other sites More sharing options...
David Fankhauser Posted April 25, 2019 Author Share Posted April 25, 2019 I am asking about the smooth, dark, flat pieces in the upper left quadrant of this image. I have seen much larger pieces, but they have few features other than their smooth, dark flatness. Thank you for your hypothesis. Link to comment Share on other sites More sharing options...
Rockwood Posted April 25, 2019 Share Posted April 25, 2019 6 minutes ago, Kane said: larger Flexicalymene pygidium, Okay. Scratch the leptaena idea. Link to comment Share on other sites More sharing options...
Kane Posted April 25, 2019 Share Posted April 25, 2019 According to the faunal list of these formations, I reiterate Isotelus sp. fragment as a likely candidate. These are fairly typical of the turbid Ordovician deposits spanning Cincinnati to the Ordovician band in Ontario. 2 ...How to Philosophize with a Hammer Link to comment Share on other sites More sharing options...
Fossildude19 Posted April 25, 2019 Share Posted April 25, 2019 +1 for Isotelus bits. 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...
David Fankhauser Posted April 25, 2019 Author Share Posted April 25, 2019 Thank you very much. From the size of these fragments, I would guess that Isotelus is one of the larger trilobites. Link to comment Share on other sites More sharing options...
Kane Posted April 25, 2019 Share Posted April 25, 2019 1 minute ago, David Fankhauser said: Thank you very much. From the size of these fragments, I would guess that Isotelus is one of the larger trilobites. These asaphids could attain impressive size. In fact, the largest complete trilobite ever found was Isotelus rex in Manitoba at 720mm. ...How to Philosophize with a Hammer Link to comment Share on other sites More sharing options...
David Fankhauser Posted April 25, 2019 Author Share Posted April 25, 2019 Asaphid is a new term for me, thanks! (https://en.m.wikipedia.org/wiki/Asaphida) For many years I have found remnants of the lace collar trilobite in strata of Upper Ordovician deposits in south western Ohio. I have Learned that this species is the index fossil for the Kope formation. Right? What is new and exciting to me is that there appear to be at least three different species of trilobites found in these Kope deposits, cryptolithus, Flexicalimenes and Isotelus. 1 Link to comment Share on other sites More sharing options...
erose Posted April 25, 2019 Share Posted April 25, 2019 2 hours ago, David Fankhauser said: Asaphid is a new term for me, thanks! (https://en.m.wikipedia.org/wiki/Asaphida) For many years I have found remnants of the lace collar trilobite in strata of Upper Ordovician deposits in south western Ohio. I have Learned that this species is the index fossil for the Kope formation. Right? What is new and exciting to me is that there appear to be at least three different species of trilobites found in these Kope deposits, cryptolithus, Flexicalimenes and Isotelus. There are many more species present although much less common than the three you mentioned. Check out the Dry Dredgers web site http://drydredgers.org for a more complete list of Cincinnatian trilobites. 1 Link to comment Share on other sites More sharing options...
.thumb.jpg.82890752b28241d36736ef0d40cbd17a.jpg)
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