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Panisaspis, a new genus of pliomerid trilobites from the Lower Ordovician (Ibexian; Tulean and Blackhillsian) of the Great Basin, western USA

. Zootaxa. 2969, 1 (Jul. 2011), 1–68. DOI:https://doi.org/10.11646/zootaxa.2969.1.1.