The conodont database v0.3

- Branson, E. B., Mehl, M. G. (1938) - The conodont genus Icriodus and its stratigraphic distribution. Journal of                           Paleontology, vol. 12(2): pp. 156-166.

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- Hinde, G. J. (1879) - On conodonts from the Chazy and Cincinnati Group of the Cambro-Silurian, and from the                         Hamilton and Genesee-Shale divisions of the Devonian, in Canada and the United States. Geological Society of                 London, Quarterly Journal, vol. 35: 351-369p.

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- Pander, C. H. (1856) - Monographie der fossilen Fische des silurischen Systems des russisch-baltischen Gouvernements.         Buchdr. der K. Akademie der wissenschaften, vol. 1: 91p.

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- Thomas (1949) - Devonian-Mississippian formations of southeast Iowa. Bulletin of the Geological Society of America,             vol. 60: pp. 403-438.

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- Ulrich, E. O., Bassler, S. (1926) - A classification of the toothlike fossils, conodonts, with descriptions of american                     Devonian and Mississippian species. Proceedings of the U. S. National Museum, vol. 68: 63p.

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- Youngquist, W., Peterson, R. F. (1947) - Conodonts from the Sheffield Formation of North-Central Iowa. Journal of                   Paleontology, vol. 21(3): pp. 242-253.