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Bahia Group

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Coordinates: 12°54′S 38°30′W / 12.9°S 38.5°W / -12.9; -38.5
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Bahia Group
Stratigraphic range: Aptian
TypeGroup
Sub-unitsMarfim Formation
Lithology
PrimaryConglomerate
Location
Coordinates12°54′S 38°30′W / 12.9°S 38.5°W / -12.9; -38.5
Approximate paleocoordinates12°42′S 5°42′W / 12.7°S 5.7°W / -12.7; -5.7
RegionBahia
Country Brazil
ExtentRecôncavo Basin
Type section
Named forBahia
Bahia Group is located in Brazil
Bahia Group
Bahia Group (Brazil)

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]

Fossil content

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Color key
Taxon Reclassified taxon Taxon falsely reported as present Dubious taxon or junior synonym Ichnotaxon Ootaxon Morphotaxon
Notes
Uncertain or tentative taxa are in small text; crossed out taxa are discredited.

Theropods

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Theropods of the Bahia Group
Genus Species Location Stratigraphic position Material Notes Images
Carcharodontosauria Indet Indeterminate
Spinosauridae Indet. Indeterminate
Tyrannosauroidea? Indet. Indeterminate

Sauropods

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Sauropods of the Bahia Group
Genus Species Location Stratigraphic position Material Notes Images
Diplodocidae Indet. Indeterminate
Lithostrotia Indet. Indeterminate

Ornithopods

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Ornithopods of the Bahia Group
Genus Species Location Stratigraphic position Material Notes Images
Iguanodontia Indet. Indeterminate
Tietasaura T. derbyiana A elasmarian ornithopod

Pterosaurs

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Pterosaurs of the Bahia Group
Genus Species Location Stratigraphic position Material Notes Images
Anhangueridae Indet. Indeterminate

Crocodyliformes

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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

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Turtles of the Bahia Group
Genus Species Location Stratigraphic position Material Notes Images
Testudines Indet. Indeterminate

Fish

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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

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References

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  1. ^ 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.
  2. ^ Weishampel, et al. (2004). "Dinosaur distribution." Pp. 517-607.
  3. ^ Pedra Furada Bay at Fossilworks.org
  4. ^ 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

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Further reading

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  • 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
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