| ID | Reference | 
			| 1 | Cope, E. D., 1871, Observations on the extinct batrachian fauna of the Carboniferous of Linton, Ohio. Proceedings of the American Philosophical Society, v. 12, p. 177. | 
			| 2 | Cope, E. D., 1875, Synopsis of the extinct batrachia from the Coal Measures. Report of the Geological Survey, Ohio, v. 2, p. 350 – 411. | 
			| 3 | Cope, E. D., 1877, Descriptions of extinct Vertebrata from the Permian and Triassic Formations of the United States: Proceedings of the American Philosophical Society, v. 17, p. 182 – 193. | 
			| 4 | Cope, E. D., 1883, Fourth contribution to the history of ther Permian formation in Texas: Proceedings of the American Philosophical Society, v. 20, p. 628 – 636. | 
			| 5 | Cope, E. D., 1889, Synopsis of the families of Vertebrata: American Naturalist, v. 23, p. 849 – 877. | 
			| 6 | Cope, E. D., 1891, On the characters of some Paleozoic fishes, I. On a new elasmobranch from the Permian, Styptobasis knightiana gen. Et sp. nov.: Proceedings of the U. S. National Museum, v. 14, p. 447. | 
			| 7 | Cope, E. D., 1894, The fossil vertebrates from the Fissure at Port Kennedy, Pennsylvania: Proceedings of the Academy of Natural Sciences of Philadelphia, p. 446 – 451. | 
			| 8 | Eastman, C. R., 1896, Remarks on Petalodus allegheniensis Leidy: Journal of Geology, v. 4, p. 174 – 176. | 
			| 9 | Eastman, C. R., 1897, On the character of Macropetalichthys: American Naturalist, v. 31, p. 493 – 499. | 
			| 10 | Eastman, C. R., 1899, Some new American Fossil Fishes: Science, v. 9, p. 642 – 643. | 
			| 11 | Eastman, C. R., 1900, Karpinsky’s genus Helicoprion: a review: American Naturalist, v. 34, p. 579. | 
			| 12 | Eastman, C. R., 1901, On Campodus, Edestus, Helicoprion, Acanthodes, and other Permo-Carboniferous sharks [abstract]: Science, new series, v. 14, p. 795. | 
			| 13 | Eastman, C. R., 1902a, The Carboniferous fish fauna of Mazon Creek, Illinois: Journal of Geology, v. 10, p. 535 – 541. | 
			| 14 | Eastman, C. R., 1902b, Campyloprion, a new form of Edestus-like dentition: Geological Magazine, v. 4, no. 9, p. 148 – 152. | 
			| 15 | Eastman, C. R., 1902c, On the genus Peripristis St. John: Geological Magazine, v. 4, no. 9, p. 388 – 391. | 
			| 16 | Romer, A. S., and Smith, H. J., 1934, American Carboniferous dipnoans: Journal of Geology, v. 42, p. 700 - 719. | 
			| 17 | Romer, A. S., and Smith, H. J., 1902d, Some Carboniferous cestraciont and acanthodian sharks: Harvard College, Museum of Comparative Zoology Bulletin, v. 39, p. 55 – 99. | 
			| 18 | Romer, A. S., and Smith, H. J., 1902e, Some hitherto unpublished observations of Orestes S. John on Paleozoic fishes: American Naturalist, v. 36, p. 653 – 659. | 
			| 19 | Romer, A. S., and Smith, H. J., 1902f, Notice of interesting new forms of Carboniferous fish remains: American Naturalist, v. 36, p. 849 – 854. | 
			| 20 | Romer, A. S., and Smith, H. J., 1903a, Carboniferous fishes of the central western states: Harvard Collections, Museum of Comparative Zoology Bulletin, v. 39, p. 163 – 226. | 
			| 21 | Romer, A. S., and Smith, H. J., 1903b, On the nature of Edestus and related forms: Mark Anniversary Volume, Harvard University, p. 279 – 289. | 
			| 22 | Romer, A. S., and Smith, H. J., 1904, A brief general account of fossil fishes: New Jersey Geological Survey, Annual Report, p. 27 – 66. | 
			| 23 | Romer, A. S., and Smith, H. J., 1917, Fossil fishes in the collection of the United States National Museum: Proceedings of the U. S. National Museum, v. 52, no. 2177, p. 235 – 304. | 
			| 24 | Eastman, C. R., and Barbour, E. H., 1902, Synopsis of the Missourian and Permo-Carboniferous fish fauna of Kansas and Nebraska [abstract] : Science, new series, v. 16, p. 266 – 267. | 
			| 25 | Hansen, M. C., 1968, the Upper Paleozoic genus Petalodus (Bradyodonti) from North America [abstract]: Nebraska Academy of Sciences Proceedings, 78th Annual Meeting, p. 19 – 20. | 
			| 26 | Hansen, M. C., 1977, Origin of phosphatic black shale in Pennsylvanian cyclothems of Mid-Continent North America: American Association of Petroleum Geologists Bulletin 61, no. 5, p. 1045-1068. | 
			| 27 | Heckel, P. H., and Baesemann, J. F., 1975, Environmental interpretation of conodont distribution in Upper Pennsylvanian (Missourian) megacyclothems in eastern Kansas: American Association of Petroloeum Geologists Bulletin, v. 59, no. 3, p. 486-509. | 
			| 28 | Leidy, J., 1857, Notices  of some remains of extinct fishes: Proceedings of the Academy of Natural Sciences of Philadelphia, 1857:167-168. | 
			| 29 | Maisey, J., 1983, Some Pennsylvanian chondrichthyian spines from Nebraska: Transactions of the Nebraska Academy of Sciences, v. 11, p. 81 – 84. | 
			| 30 | Martin, L. D., 1969, A vertebrate assemblage from the early Permian of Nebraska [abstract]: Nebraska Academy of Sciences Proceedings, 79th Annual Meeting, p. 26 – 27. | 
			| 31 | Martin, L. D., 1972, Coelocanth fishes from the Pennsylvanian and Permian of Nebraska and Kansas: Nebraska Acedemy of Sciences Proceedings, 82nd Annual Meeging, p. 40, 41. | 
			| 32 | Newberry, J. S., and Worthen, A. H., 1866, Geological Survey of Illinois. Paleontology of Illinois, Section 1, Descriptions of new species of vertebrates, mainly from the sub-Carboniferous Limestone and Coal Measures of Illinois, v. 2, p. 1 – 141. | 
			| 33 | Newberry, J. S., and Worthen, A. H., 1870, Description of fossil vertebrates: Geological Survey of Illinois, v. 4, p. 347 – 374. | 
			| 34 | Ossian, C. R., 1974, Paleontology, paleobotany and facies characteristics of a Pennsylvanian delta in southeastern Nebraska: University of Texas, unpublished phD dissertation, 393 p. | 
			| 35 | Romer, A. S., and Smith, H. J., 1934, American Carboniferous dipnoans: Journal of Geology, v. 42, p. 700 - 719. | 
			| 36 | St. John, O. W., and Worthen, A. H., 1875, Description of fossil fishes: Illinois Geological Survey, v. 6, p. 245 – 488. | 
			| 37 | St. John, O. W., and Worthen, A. H., 1883. Description of fossil fishes: Illinois Geological Survey, v. 7, p. 55 – 264. | 
			| 38 | Zangerl, R., and Case, G. R., 1973, Iniopterygia, a new order of Chondrichthyian fishes from the Pennsylvanian of North America: Fieldiana Geology Memoirs, 67 p. |