Vespersaurus

Vespersaurus is a genus of noasaurine theropod dinosaur from the Late Cretaceous period, found in the Rio Paraná Formation in the Paraná Basin, Brazil. The type and only species is V. paranaensis, which would have lived in the giant prehistoric Botucatu Desert.
Etymology.
The generic name means "evening" or "west lizard" ("vesper" is latin for "evening/west") in reference to the town Cruzeiro do Oeste ("Western Cross") near which the fossils were found. The specific name refers to the Paraná state.
Description.
The taxon is notable for its distinct, functionally monodactyl foot anatomy, where the singularly large third digit would have borne most of the weight while walking. Based on the proportions of its holotype remains (MPCO.V 0065d), "V. paranaensis" was a small theropod, with an estimated body length of 1 to 1.5 meters. This makes it comparable in size to "Noasaurus leali" and "Masiakasaurus knopfleri". Body mass of "V. paranaensis" was 11.28 kg, nearly that of the ornithischians "Jeholosaurus shangyuanensis" and "Gasparinisaura cincosaltensis".