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 specimens are from Plate 8, and greatly magnified. Lower Cambrian Olenellus zone. Figure 6,  Peahchella iddingsi, "small silicified cephalon," from Grapevine Mountains. Figures 16, 14 undetermined Ptychoparids; figure 16, "latex cast of cranidium" from the Funeral Mountains; figure 14, cranidium from the Funeral Mountains.