The Feliz Deserto Formation is a geologic formation of the Early Cretaceous age (Berriasian to Valanginian) in northeastern Brazil's Sergipe-Alagoas Basin. The formation belongs to the rift phase, in which a great lake formed.

Background The formation provides vertebrate fossils of Lepidotes fish and teeth of crocodylomorphs and theropods, including what may be the oldest members of the Spinosauridae reported in South America.

Fossil content

Dinosaurs

Theropods Theropods of the Feliz Deserto Formation Genus Species Location Stratigraphic position Material Notes Images Baryonychinae indet. Indeterminate A tooth A spinosaurid theropod Spinosaurinae indet. Indeterminate Eight teeth A spinosaurid theropod Theropoda indet. Indeterminate A toe bone

Crocodylomorphs Crocodylomorphs of the Feliz Deserto Formation Genus Species Location Stratigraphic position Material Notes Images Crocodyliformes indet. Indeterminate Six isolated teeth Mesoeucrocodylia indet. Indeterminate An isolated osteoderm Neosuchia Indet. Indeterminate Eleven isolated teeth

Fish Fishes of the Feliz Deserto Formation Genus Species Location Stratigraphic position Material Notes Images Lepidotes L. sp. A lepidotid fish

References