Non-avian theropod dinosaurs from the early Late Cretaceous of central Europe

摘要: Abstract Quantitative and qualitative analyses of isolated teeth postcranial elements non-avian theropod dinosaurs from the Upper Cretaceous (Santonian) Csehbanya Formation, Iharkut (western Hungary) indicate that these remains represent multiple dinosaur groups. Based on comparative statistical analyses, 58 tooth fragments are identified as belonging to medium-sized basal tetanuran theropods may have represented top-predator terrestrial ecosystem. These almost identical with two ‘Megalosaurus pannoniensis’ lower Campanian Muthmannsdorf (Austria) show a notable similarity Middle Jurassic M. bucklandii Lower ‘M. dunkeri’ England. A single pedal ungual phalanx is interpreted oldest European occurrence Late abelisaurids, suggested by ventral groove bifurcated grooves laterally bordering convex, triangular area. Small-bodied paravian found be best group in Iharkut, including teeth, caudal vertebrae, metacarpal III, manual phalanges, fragmentary left tibia. particularly remain complete scapulocoracoid possessing unique pneumatic foramen coracoid foramen. This specimen assigned Pneumatoraptor fodori n. g. et sp. Finally, numerous Theropoda indet. were recovered, sacrum offers new insights into sacral pneumaticity theropods. The presence Santonian ecosystem provides first evidence during early Mediterranean archipelago was inhabited both Gondwanan Euramerican members dinosaurs. Consistent data available for other archosaurian taxa, close relationship much older forms suggests area functioned refugium archipelago.