| Scientific cross-sections of fusulinids from the middle Permian Arcturus Formation, White Pine County, Nevada. Photograph courtesy Raymond L. Knight; I edited and processed the image with photoshop. Specimens: 1-3--Fusulinella divexa; 4-6--Triticites secalicus oryziformis; 7-10 and 13-14--Schwagerina guembeli; 11-12--Schwagerina medullaris. |