A.C. Posted March 29, 2022 Share Posted March 29, 2022 Hey all, I just purchased this fossil over the weekend. The person I purchased form had this documentation: Calymene celebra Sil-Waldron Sh. Hartsville, In. Let's assume locality and age are correct, can anyone confirm if this is a Calymene celebra? My gut is telling me a Calymene breviceps but I am new to Calymene trilobites. Specimen is roughly 2.75 cm wide and estimated 6.25 cm if prone Also while we are talking about Calymene trilobites is there any good resources anyone knows of for IDing them? I have some more that I would like an ID on. Any input is welcome! Link to comment Share on other sites More sharing options...
piranha Posted March 30, 2022 Share Posted March 30, 2022 Calymene breviceps is the only species of calymenid from the Waldron Shale. The frontomedian glabellar lobe of C. breviceps protrudes over the cephalic anterior border. fig. 7 from: Edgecombe, G.D., Adrain, J.M. 1995 Silurian Calymenid Trilobites from the United States. Palaeontographica Abteilung A, 235:1-19 additional reading: Whittington, H.B. 1971 Silurian Calymenid Trilobites from United States, Norway, and Sweden. Palaeontology, 14(3):455-477 PDF LINK 1 1 Link to comment Share on other sites More sharing options...
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