Eastman, C.R. (1903)
Carboniferous fishes from the central western States. Bulletin of the Museum of Comparative Zoology at Harvard College, 39(7), 163–226
Ossian, C.R. (1974)
Paleontology, paleobotany and facies characteristics of a Pennsylvanian delta in southeastern Nebraska. Unpubl. Ph.D. thesis, Univ. Texas, Austin, Texas: 393 pp.