a Cenomanian age cannot be ruled out. The extent of the Crato unit and its relationship to the Romualdo Formation had long been ill-defined. It was not until a 2007 volume on the unit by Martill, Bechly and Loveridge that the Crato Formation was given a formal type locality, and was formally made a distinct formation separate from the Romualdo Formation, which is about 10 Ma younger. Fossil content Archosaurs Indeterminate remains of non-avian theropods, avialans, ornithischians, and possibly oviraptorosaurs have been found in Ceara state, Brazil. The oviraptorosaurian remains have been re-identified as megaraptoran fossils. Dinosaurs Crocodylomorphs Pterosaurs Turtles Fish Araripelepidotes Beurlenichthys ouricuriensis Brannerion Calamopleurus Cladocyclus Enneles audax Iemanja palma Lepidotes wenzai Microdon penalvai Notelops Obaichthys Oshunia brevis Placidichthys bidorsalis Rhacolepis Rhinobatos beurleni Santanaclupea silvasantosi Tharrhias Tribodus limae Vinctifer See also List of fossil sites (with link directory) List of dinosaur-bearing rock formations Araripe Basin Cerro Barcino Formation Elrhaz Formation Guarujá Formation Itapecuru Formation Mata Amarilla Formation References Bibliography Further reading David M. Martill, 1993. Fossils of the Santana and Crato Formations, Brazil (Field Guide to Fossils no. 5) (The Palaeontological Association) Geologic formations of Brazil Cretaceous Brazil Cretaceous paleontological sites of South America Paleontology in Brazil Mudstone formations Deltaic deposits Environment of Ceará Environment of Pernambuco Environment of Piauí Landforms of Ceará Landforms of Pernambuco Landforms of Piauí Northeast Region, Brazil