Trilobites Figured From United States Geological Survey Professional Paper 1047, Physical Stratigraphy and Trilobite Biostratigraphy of the Carrara Formation (Lower and Middle Cambrian) in the Southern Great Basin, by Allison R. Palmer and Robert B. Halley

Trilobites from the Lower-Middle Cambrian Carrara Formation, Death Valley National Park (all greatly magnified). From Plate 1. "Figure 13 caphalon, stage V of Bristolia anteros", Grapevine Mountains.  Figure 16 cephalon of Bristolia bristolenis, Funeral Mountains. Both specimens from the Lower Cambrian Olenellus Zone.