| Feliz Deserto Formation | |
|---|---|
| Stratigraphic range: Berriasian-Valanginian ~ | |
| Type | Geological formation |
| Location | |
| Region | Sergipe-Alagoas Basin of Northeastern Brazil |
| Country |  Brazil |
| Type section | |
| Named for | Feliz Deserto |
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. [1]
The formation provided fossils of bivalve and gastropod molluscs, vertebrate remains of Lepidotes fish and teeth of crocodylomorphs and spinosaurids, the oldest of the family reported in South America. [1] [2]
Color key
| Notes Uncertain or tentative taxa are in small text; |
| Theropods of the Feliz Deserto Formation | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
| Abelisauridae Indet. | Indeterminate | |||||
| Baryonychinae Indet. [3] | Indeterminate | Teeth | A spinosaurid theropod. | |||
| Caenagnathidae Indet. | Indeterminate | Closely related to Gigantoraptor erlianensis . | ||||
| Carcharodontosauridae Indet. | Indeterminate | |||||
| Eudromaeosauria Indet. | Indeterminate | |||||
| Ornithomimosauria Indet | Indeterminate | |||||
| Spinosauridae Indet. [4] | Indeterminate | Teeth | ||||
| Spinosaurinae Indet. [4] | Indeterminate | Teeth | A spinosaurid theropod. | |||
| Theropoda Indet. [4] | Indeterminate | Preungual Pedal Phalnax | ||||
| Saoropods of the Feliz Deserto Formation | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
| Brachiosauridae Indet. | Indeterminate | |||||
| Dicraeosauridae Indet. | Indeterminate | Closely related to Amargasaurus cazaui | ||||
| Diplodocidae Indet. | Indeterminate | |||||
| Somphospondyli Indet. | Indeterminate | |||||
| Titanosauriformes Indet. | Indeterminate | |||||
| Turiasauria Indet. | Indeterminate | |||||
| Ornithopods of the Feliz Deserto Formation | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
| Elasmaria Indet. | Indeterminate | |||||
| Hypsilophodontidae Indet. | Indeterminate | |||||
| Iguanodontia Indet. | Indeterminate | |||||
| Polacanthinae Indet. | Indeterminate | |||||
| Rhabdodontomorpha Indet. | Indeterminate | |||||
| Stegosauridae Indet. | Indeterminate | |||||
| Pterosaurs of the Feliz Deserto Formation | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
| Anhangueridae Indet | Indeterminate | |||||
| Crocodylomorphs of the Feliz Deserto Formation | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
| Neosuchia Indet. [4] | Indeterminate | Osteoderm and 18 Isolated Teeth | ||||
| Turtles of the Feliz Deserto Formation | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
| Mammals of the Feliz Deserto Formation | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
| Volaticotherini Indet. | Indeterminate | |||||
| Amphibian of the Feliz Deserto Formation | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
| Anura Indet. | Indeterminate | |||||
| Chigutisauridae Indet. | Indeterminate | a giant chigutisaurid temnospondyl. | ||||
| Cartilaginous fish of the Feliz Deserto Formation | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
| Lobbed-finned fish of the Feliz Deserto Formation | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
| Ray-finned fish of the Feliz Deserto Formation | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
| Lepidotes | Indeterminate | A lepidotid fish. | ||||
| Crustaceans of the Feliz Deserto Formation | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
| Bivalves of the Feliz Deserto Formation | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
| Gastropods of the Feliz Deserto Formation | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
Irritator is a genus of spinosaurid dinosaur that lived in what is now Brazil during the Albian stage of the Early Cretaceous Period, about 113 to 110 million years ago. It is known from a nearly complete skull found in the Romualdo Formation of the Araripe Basin. Fossil dealers had acquired this skull and sold it to the State Museum of Natural History Stuttgart. In 1996, the specimen became the holotype of the type species Irritator challengeri. The genus name comes from the word "irritation", reflecting the feelings of paleontologists who found the skull had been heavily damaged and altered by the collectors. The species name is a homage to the fictional character Professor Challenger from Arthur Conan Doyle's novels.
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