Leptopora

Easton, W. H. (1944). Corals from the Choteau and related formations of the Mississippi Valley region. <em>Illinois Geological Survey Report of Investigations.</em> 97: 1-94.

White, C. A. (1879). Remarks upon certain Carboniferous fossils from Colorado, Arizona, Idaho, Utah, and Wyoming, and certain Cretaceous corals from Colorado, together with descriptions of new forms. <em>Bulletin of the United States Geological and Geographical Survey of the Territories, Department of the Interior.</em> 5(2): 209-221.

Winchell, A. (1863). Descriptions of fossils from the yellow sandstones lying beneath the "Burlington Limestone," at Burlington, Iowa. <em>Proceedings of the Academy of Natural Sciences of Philadelphia.</em> 15: 2-25.