Fulgurotherium (meaning "Lightning beast") is a dubious genus of ornithischian dinosaur from the Late Cretaceous (Cenomanian) Griman Creek Formation.

[1][2] The type specimen (BMNH R.3719),[1] an opalized anterior femur, was not fully described until in 1932, German paleontologist Friedrich von Huene named it Fulgurotherium australe as a coelurosaurian theropod related to Ornitholestes and Oviraptor.

He misidentified the fossil as part of the right metacarpal and due to this misidentification, believing it was one of the largest coelurosaurs then described,[2] and later moved it to Ornithomimidae in 1944.

[9][1] The holotype measures 7 centimeters in length and 4.5 cm at its widest transverse point,[2] one of the largest basal ornithischian femora recovered from Australia.

[10] Hypsilophodon Fulgurotherium Trinisaura Gasparinisaura Qantassaurus Notohypsilophodon Morrosaurus Kangnasaurus Anabisetia Atlascopcosaurus Macrogryphosaurus Talenkauen Dryomorpha