Robison, Richard A. & Loren E. Babcock. (2011). "Systematics, paleobiology, and taphonomy of some exceptionally preserved trilobites from Cambrian Lagerstätten of Utah". Paleontological Contributions. 5: 1–47.
Robison, Richard A. & Loren E. Babcock. (2011). "Systematics, paleobiology, and taphonomy of some exceptionally preserved trilobites from Cambrian Lagerstätten of Utah". Paleontological Contributions. 5: 1–47.