Gavialosuchus is an extinct tomistomine from the late Oligocene and Miocene of eastern North America and early Miocene of Europe. Three species have been named: the type species G. eggenburgensis from the early Miocene of Austria; G. americanus, from the late Miocene to early Pliocene of Florida; and G. carolinensis, from the late Oligocene of South Carolina. Another species, as yet unnamed, may be present in the Miocene of Georgia. Unlike its modern fresh water relatives, Gavialosuchus was an estuarine and coastal water crocodilian, living in shallow marine waters alongside Metaxytherium, Pomatodelphis, and Hemipristis serra. It was long-snouted and large: G. carolinensis was at least 5.37 meters long (17.3 ft), and one specimen of G. americanus is estimated at 9.75 meters (32.0 ft) long