minnbuckeye Posted September 15 Share Posted September 15 I have just returned from a trip to Ohio where besides family events, I picked up some loose end trilobites collected over the last few years that I was reluctant to prep fully. @isotelus, tell your son that he did a magnificent job!!!!!!! My pride and joy first. Thaleops ovata from the Platteville Formation/ Ordovician of SW Wisconsin Not far behind is this trilobite that I hesitantly call Gabriceraurus mifflinensis. Unfortunately, I could not locate the missing genial spine. I am a bit confused on this one. Initially I had IDed it as Illaenus americana but after its prep, it appears to be T. ovata. What continues to confuse me is the lack of long genial spines like the first trilobite pictured. One is broken. So it is hard to say with it. But the other is just a non fractured nubbin. Finally an unknown trilobite from an unknown location. Unfortunately, it never got labeled which is not good considering my age related forgetfulness. @piranha IDed this as Calymene breviceps from the Waldron Shale!!!!!! 17 Link to post Share on other sites
Bobby Rico Posted September 15 Share Posted September 15 Really nice bugs and preparation. 1 2 Link to post Share on other sites
Top Trilo Posted September 15 Share Posted September 15 You find some of the best trilobites I've seen. They're amazing! I can't help at all on the last one, all Calymenids look the same to me. Either way, excellent finds and excellent prep! 1 1 Link to post Share on other sites
Tidgy's Dad Posted September 15 Share Posted September 15 Wow! Stunning. I don't think that last one is Moroccan, looks an American to me. 1 Link to post Share on other sites
piranha Posted September 15 Share Posted September 15 1 hour ago, minnbuckeye said: Illaeanus (or Thaleops) ovata (or ovatum) from the Platteville Formation/ Ordovician of SW Wisconsin Thaleops (not Illaenus) ovata (not ovatum). Here is the the relevant reference: Amati, L., Westrop, S.R. 2004 A Systematic Revision of Thaleops (Trilobita: Illaenidae) With New Species form the Middle and Late Ordovician of Oklahoma and New York. Journal of Systematic Palaeontology, 2(3):207-256 PDF LINK 1 hour ago, minnbuckeye said: What continues to confuse me is the lack of long genial spines like the first trilobite pictured. One is broken. So it is hard to say with it. But the other is just a non fractured nubbin. The genal spines are not present. The "nubbin" is the right palpebral lobe. 1 hour ago, minnbuckeye said: Finally an unknown trilobite from an unknown location. Unfortunately, it never got labeled which is not good considering my age related forgetfulness. Any guesses would be appreciated. POSSIBLY a trilobite from Waldron Shale or a Moroccan one gifted to me. Calymene breviceps from the Waldron Shale. The frontomedian glabellar lobe of C. breviceps protrudes over the cephalic anterior border. Edgecombe, G.D., Adrain, J.M. 1995 Silurian Calymenid Trilobites from the United States. Palaeontographica Abteilung A, 235:1-19 5 Link to post Share on other sites
Misha Posted September 15 Share Posted September 15 Beautiful bugs with some great prep! Congratulations on the finds and getting them all cleaned up! 1 Link to post Share on other sites
Fossildude19 Posted September 16 Share Posted September 16 Great trilobites, Mike! Thanks for showing them to us. 1 Link to post Share on other sites
FossilNerd Posted September 16 Share Posted September 16 I think this emoji says it all… 1 1 Link to post Share on other sites
Collector9658 Posted September 16 Share Posted September 16 Those are some really nice trilobites you've found! Congratulations 1 Link to post Share on other sites
Coco Posted September 16 Share Posted September 16 Very nice ! Coco 1 Link to post Share on other sites
minnbuckeye Posted September 16 Author Share Posted September 16 @piranha, Thanks so much for the informative responses that you give. As for my questionable "nubbin", here are better pictures showing why I am scratching my head. It just seems like long genial spines did not exist in this specimen. Maybe it was broken off and healed???? Or could it be an immature specimen???? If the new pictures help you to answer my query, I am all ears. Link to post Share on other sites
piranha Posted September 16 Share Posted September 16 Please take another look. This image shows the fracture quite clearly... Link to post Share on other sites
Shellseeker Posted September 16 Share Posted September 16 19 hours ago, minnbuckeye said: Finally an unknown trilobite from an unknown location. Unfortunately, it never got labeled which is not good considering my age related forgetfulness. @piranha IDed this as Calymene breviceps from the Waldron Shale!!!!!! WOW and WOW!!!! Mike, and to think I used to go hunting with you when you weren't finding such fantastic fossils !!! Forgetfulness ?? I am getting to the point where I forget to bring the paddles to my Kayak....So I just walk in. Link to post Share on other sites
minnbuckeye Posted September 16 Author Share Posted September 16 4 hours ago, Shellseeker said: Forgetfulness ?? I am getting to the point where I forget to bring the paddles Well @Shellseeker, did you notice I couldn't remember where I found the nice trilobite. Forgetting the paddles is nothing. When you forget where you find the sloth tooth, then you are on my level. And you have the excuse of age over me!!!!!!!!!!!!!!!!!!!!!!!!!!! 1 Link to post Share on other sites
NoahW24 Posted September 18 Share Posted September 18 Beautiful bugs and preps! Mifflin fm trilobites are always a treat to see- butterscotchy! 1 Link to post Share on other sites
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