Late Ordovician and Silurian lichid trilobites from Northwestern Canada: Hemiarges, Borealarges, and Richterarges

M. J. Campbell, and B. D. E. Chatterton

2007

Article

Journal of Paleontology 81(6):1348-1364

Find it at:

http://dx.doi.org/10.1666/06-008.1