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Adrain, J.M., Karim, T.S. and Mcadams, N.E. 2020.

Atlanticalymene, a new genus of Middle Ordovician (Darriwilian) calymenine trilobites, and revision of the calymenoidean genus Protocalymene Ross

. Zootaxa. 4859, 1 (Oct. 2020), 1–55. DOI:https://doi.org/10.11646/zootaxa.4859.1.1.