aek Posted July 12, 2022 Share Posted July 12, 2022 Need help identifying this pygidium. Is it Flexicalymene granulosa? Lower Miamitown. 3.5mm. 2 Link to comment Share on other sites More sharing options...
piranha Posted July 12, 2022 Share Posted July 12, 2022 According to the relevant literature: Flexicalymene granulosa occurs in the Kope Fm. up to the Fairview Fm. Flexicalymene meeki is reported in the Miamitown Shale. Hunda, B.R., Hughes, N.C. 2007 Evaluating Paedomorphic Heterochrony in Trilobites: The Case of the Diminutive Trilobite Flexicalymene retrorsa minuens from the Cincinnatian Series (Upper Ordovician), Cincinnati Region. Evolution & Development, 9(5):483-498 PDF LINK Hughes, N.C., Cooper, D.L. 1999 Paleobiologic and Taphonomic Aspects of the "granulosa" Trilobite Cluster, Kope Formation (Upper Ordovician, Cincinnati Region). Journal of Paleontology, 73(2):306-319 2 Link to comment Share on other sites More sharing options...
connorp Posted July 12, 2022 Share Posted July 12, 2022 Yep, looks like Flexicalymene granulosa to me. 1 1 Link to comment Share on other sites More sharing options...
piranha Posted July 12, 2022 Share Posted July 12, 2022 With 6 axial rings as the key differentiating feature it is certainly Flexicalymene granulosa. However, it must be out of context if it was surface collected above the Fairview Fm. 2 Link to comment Share on other sites More sharing options...
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