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Ikanogavialis
''Ikanogavialis'' is an extinct genus of gryposuchine gavialoid crocodilian. Fossils have been found from the Urumaco Formation of Venezuela. The strata from which remains are found are late Miocene in age, rather than Pliocene as was once thought.〔Langston, W. and Gasparini, Z. (1997). Crocodilians, ''Gryposuchus'', and the South American gavials. ''In:'' Kay, R. F., Madden, R. H., Cifelli, R. L. and Flynn, J. J., eds., ''Vertebrate Paleontology in the Neotropics: The Miocene fauna of La Venta, Colombia.'' Washington, D.C. Smithsonian Institution Press, pp. 113-154.〕 A possible member of this genus survived more recently in the Solomon Islands.
==Description==
''Ikanogavialis'' had a dorsoventrally deep snout and a distinctive notch between the dentary and maxillary alveoli.〔Sill, W. D. (1970). Nota preliminar sobre un nuevo gavial del Plioceno de Venezuela y una discusion de los gaviales sudamericanos. ''Ameghiniana'' 7 (Preliminary note on a new gharial Pliocene of Venezuela and a discussion of the South American gavials. '' Ameghiniana '' '7'), pp. 151–159.〕 The external nares projected anterodorsally from the rostrum. This can be seen as a plesiomorphic characteristic in crocodilians, but given that the earliest gavialoids possessed dorsally projecting external nares, this feature can be seen as having been a reversal from the gavialoid apomorphy back to the crocodilian plesiomorphy rather than having been directly obtained from an early crocodilian ancestor.
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