The Bahia Group, also known as Bahia Series, is an Aptian geologic group of the Recôncavo Basin in Bahia, Brazil. Dinosaur remains are among the fossils that have been recovered from unit, including those of the ornithopod Tietasaura from the Marfim Formation.[1][2] The conglomerates were deposited in an estuarine environment.[3]
| Bahia Group | |
|---|---|
| Stratigraphic range: Aptian | |
| Type | Group |
| Sub-units | Marfim Formation |
| Lithology | |
| Primary | Conglomerate |
| Location | |
| Coordinates | 12°54′S 38°30′W / 12.9°S 38.5°W |
| Approximate paleocoordinates | 12°42′S 5°42′W / 12.7°S 5.7°W |
| Region | Bahia |
| Country |  Brazil |
| Extent | Recôncavo Basin |
| Type section | |
| Named for | Bahia |
  Bahia Group (Brazil) | |
Fossil content
editColor key
|
Notes Uncertain or tentative taxa are in small text; |
Theropods
edit| Theropods of the Bahia Group | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
| Carcharodontosauria Indet | Indeterminate | |||||
| Spinosauridae Indet. | Indeterminate | |||||
| Tyrannosauroidea? Indet. | Indeterminate | |||||
Sauropods
edit| Sauropods of the Bahia Group | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
| Diplodocidae Indet. | Indeterminate | |||||
| Lithostrotia Indet. | Indeterminate | |||||
Ornithopods
edit| Ornithopods of the Bahia Group | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
| Iguanodontia Indet. | Indeterminate | |||||
| Tietasaura | T. derbyiana | A elasmarian ornithopod | ||||
Pterosaurs
edit| Pterosaurs of the Bahia Group | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
| Anhangueridae Indet. | Indeterminate | |||||
Crocodyliformes
edit| Crocodyliformes of the Bahia Group | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
| Sarcosuchus[4] | S. hartti | A pholidosaurid crocodyliform | ||||
| "Thoracosaurus" | "T. bahiensis" | A gavialoid crocodilian | ||||
Turtles
edit| Turtles of the Bahia Group | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
| Testudines Indet. | Indeterminate | |||||
Fish
edit| Fishes of the Bahia Group | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
| Acrodus | A. nitidus | A acrodontid hybodont | ||||
| Lepidotes | L. spp. | A lepidotid fish | ||||
| Mawsonia | M. gigas | A mawsoniid coelacanth | ||||
See also
editReferences
edit- ^ Bandeira, Kamila L. N.; Navarro, Bruno A.; Pêgas, Rodrigo V.; Brilhante, Natan S.; Brum, Arthur S.; de Souza, Lucy G.; de Silva, Rafael C.; Gallo, Valéria (2024). "A reassessment of the historical fossil findings from Bahia State (Northeast Brazil) reveals a diversified dinosaur fauna in the Lower Cretaceous of South America". Historical Biology: 1–42. doi:10.1080/08912963.2024.2318406.
- ^ Weishampel, et al. (2004). "Dinosaur distribution." Pp. 517-607.
- ^ Pedra Furada Bay at Fossilworks.org
- ^ Souza, Rafael G; Figueiredo, Rodrigo G; Azevedo, Sérgio A K; Riff, Douglas; Kellner, Alexander W A (August 12, 2019). "Systematic revision of Sarcosuchus hartti (Crocodyliformes) from the Recôncavo Basin (Early Cretaceous) of Bahia, north-eastern Brazil". Zoological Journal of the Linnean Society: zlz057. doi:10.1093/zoolinnean/zlz057. ISSN 0024-4082.
Bibliography
edit- Weishampel, David B.; Dodson, Peter; Osmólska, Halszka (2004), The Dinosauria, 2nd edition, Berkeley: University of California Press, pp. 1–880, ISBN 0-520-24209-2, retrieved 2019-02-21
Further reading
edit- J. Mawson and A. S. Woodward. 1907. On the Cretaceous formation of Bahia (Brazil), and on vertebrate fossils collected therein. Quarterly Journal of the Geological Society of London 63:128-139