1. The American species of Asterophyllites, Annularia, and Sphenophyllum;Abbott;Bull. Am. Paleontol.,1958
2. The Late Pennsylvanian Midcontinent Sea of North America: a review;Algeo;Palaeogeogr. Palaeoclimatol. Palaeoecol.,2008
3. Coal mining practice in District III;Andros;Ill. Coal Min. Investig. Bull. (Eng. Exp. Station),1915
4. Antediluvian Phytology, Illustrated by a Collection of the Fossil Remains of Plants, Peculiar to the Coal Formations of Great Britain;Artis,1825
5. Midcontinent Pennsylvanian conodont zonation;Barrick;Stratigraphy,2013