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Armstrong, M., Westrop, S.R. and Eoff, J.D. 2020.

Systematics of a survivor: the Cambrian kingstoniid trilobite Blountia Walcott, 1916 across the Marjuman–Steptoean (Guzhangian–Paibian) extinction interval in Laurentian North America

. Zootaxa. 4804, 1 (Jun. 2020), 1–79. DOI:https://doi.org/10.11646/zootaxa.4804.1.1.