| Gastropods from the middle to upper Mississippian Chainman Shale, western Millard County, Utah, not far from the eastern border of White Pine County, Nevada. Photograph courtesy Mackenzie Gordon Jr. and Ellis L. Yochelson; I edited and processed the image through photoshop. Specimens: 1-9--Gabrocingulum confusionense; 10-15--Glabrocingulum quadrigatum; 16-27--Glabrocingulum hosei; 28-35--Glabrocingulum binodosum. |