Robison, R. A.; Babcock, L. E. Systematics, Paleobiology, and Taphonomy of Some Exceptionally Preserved Trilobites from Cambrian Lagerstätten of Utah: Agnostida, Asaphida, Corynexochida, Ptychopariida, Taxonomy, Biofilm. paleocontributions 2011, No. 5. https://doi.org/10.17161/PC.1808.8543.