This mentioned taxonomy is an attempt to make an conclusive assignment from the different classifications of various scientists. Because the taxonomy may change due to the latest investigative methods and other findings, our map is a guide only.
B. C. Livezey, 2007 - Higher-order phylogeny of modern birds (Theropoda, Aves: Neornithes) based on comparative anatomy. II. Analysis and discussion - Zoological Journal of the Linnean Society (149), 1-95 (journal article, English)
S. L. Olson, 1975 - Ichthyornis in the Cretaceous of Alabama - Wilson Bulletin (87), 103-105 (journal article, English)
A. Wetmore, 1962 - Notes on fossil and subfossil birds - Smithsonian Miscellaneous Collections (145), 1-17 (journal article, English)
O. C. Marsh, 1873 - Notice of a new Species of Ichthyornis - American Journal of Science and Arts (5), 74- (journal article, English)