KompsFossilsNMinerals Posted April 23, 2021 Share Posted April 23, 2021 Hi everyone, this is a trilobite I bought when I was like 5 at the Natural History Museum in Washington, DC. Unfortunately, over the past decade I've lost the ID tag for it. I think it's a flexicalymene or calymene, but I'd really appreciate any possible guesses! Link to comment Share on other sites More sharing options...
Kane Posted April 23, 2021 Share Posted April 23, 2021 Colpocoryphe grandis. Ordovician, Morocco. 1 1 1 ...How to Philosophize with a Hammer Link to comment Share on other sites More sharing options...
KompsFossilsNMinerals Posted April 23, 2021 Author Share Posted April 23, 2021 6 minutes ago, Kane said: Colpocoryphe grandis. Ordovician, Morocco. Thank you! Link to comment Share on other sites More sharing options...
FossilDAWG Posted April 23, 2021 Share Posted April 23, 2021 Agreed with that ID. Don Link to comment Share on other sites More sharing options...
Yoda Posted April 23, 2021 Share Posted April 23, 2021 Is this the same? I also have it labelled as Flexicalymene MotM August 2023 - Eclectic Collector Link to comment Share on other sites More sharing options...
Huntonia Posted April 23, 2021 Share Posted April 23, 2021 The pygidium (tail) is the best identifying feature for these. Smooth pygidial flanks = Colpocoryphe grandis. Furrowed pygidial flanks = Flexicalymene ouzregui Here's a topic with visuals: 1 1 Link to comment Share on other sites More sharing options...
Yoda Posted April 23, 2021 Share Posted April 23, 2021 So mine seems to be a Flexicalymene. MotM August 2023 - Eclectic Collector Link to comment Share on other sites More sharing options...
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