Serra da Galga Formation

The Serra da Galga Formation is a geological formation in Minas Gerais state of southeastern Brazil. Its strata date back to the Maastrichtian, and are part of the Bauru Group.[1] It was originally considered a member of the Marília Formation.[2]

Serra da Galga Formation
Stratigraphic range: Maastrichtian
~70–66 Ma
TypeGeological formation
Unit ofBauru Group
OverliesUberaba Formation
Adamantina Formation
Lithology
PrimarySandstone
OtherMudstone, siltstone, limestone, paleosol
Location
Coordinates19°36′S 48°00′W / 19.6°S 48.0°W / -19.6; -48.0
Approximate paleocoordinates23°06′S 33°54′W / 23.1°S 33.9°W / -23.1; -33.9
Region Minas Gerais
Country Brazil
ExtentBauru Sub-basin, Paraná Basin
Type section
Named forSerra da Galga
Serra da Galga Formation is located in Brazil
Serra da Galga Formation
Serra da Galga Formation (Brazil)

Dinosaur remains are among the fossils that have been recovered from the formation.[3]

Fossil content

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Crurotarsans

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Crocodylomorphs of the Marilia Formation
Genus Species Location Notes Images
Itasuchus I. jesuinoi Area 2 Basal notosuchian[4]
 
Labidiosuchus L. amicum Serra do Veadinho, Area 2 A notosuchian with bizarre dentition[5]
Peirosaurus P. torminni Area 2 A peirosaurid[4]
Uberabasuchus U. terrificus Serra do Veadinho, Area 2 A peirosaurid[4]
 

Ornithodirans

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Three distinct titanosaurids denoted as forms A, B, and C have been found in Area 4.[4] Titanosaurine remains are known from Areas 1 and 2.[4] Indeterminate theropod remains known from Area 1.[4] Indeterminate maniraptor remains known from Area 1.[4] Indeterminate abelisaurid remains are known from Areas 1 and 2.[4] Indeterminate Carcharodontosaurid remains are known from Area 1.[4]

Dinosaurs of the Marilia Formation
Genus Species Location Stratigraphic position Material Notes Images
Aeolosaurus[4] Indeterminate A titanosaurian[4]
 
Baurutitan B. britoi Area 1 A titanosaurian[4]
Titanosauria indet. BR-050 Km 153-153.5, Ponto 1 Isolate teeth.[6] Three morphotypes; one is one of the largest known titanosaurs and two are possible juveniles.[6]
Caieiria C. allocaudata Caieira A titanosaurian[7]
"Lopasaurus"[8] None given A dromaeosaur. The holotype went missing shortly after 1980 and it has not been recovered since[8]
Trigonosaurus T. pricei Area 1 A titanosaurian[4] Possibly synonymous with Baurutitan.[7]
Uberabatitan[9] U. ribeiroi A titanosaurian[4]
Ypupiara[8] Y. lopai A dromeosaur[8]

See also

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References

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  1. ^ Marília Formation at Fossilworks.org
  2. ^ Marcus Vinícius Theodoro Soares; Giorgio Basilici; Thiago da Silva Marinho; Agustín Guillermo Martinelli; André Marconato; Nigel Philip Mountney; Luca Colombera; Áquila Ferreira Mesquita; Julia Tucker Vasques; Francisco Romero Abrantes Junior; Luiz Carlos Borges Ribeiro (2021). "Sedimentology of a distributive fluvial system: The Serra da Galga Formation, a new lithostratigraphic unit (Upper Cretaceous, Bauru Basin, Brazil)" (PDF). Geological Journal. 56 (2): 951–975. Bibcode:2021GeolJ..56..951S. doi:10.1002/gj.3987. S2CID 224928245.
  3. ^ Weishampel et al., 2004, pp. 600-604
  4. ^ a b c d e f g h i j k l m n Candeiro, 2009
  5. ^ Kellner et al., 2011
  6. ^ a b Silva Jr., Julian C.G.; Marinho, Thiago S.; Martinelli, Agustín G.; Ribeiro, Luiz C.B.; Langer, Max C. (2023), "The largest known titanosaur (Dinosauria, Sauropoda) tooth and other isolated dental elements from the Serra da Galga Formation (Cretaceous of Southeast Brazil)", Cretaceous Research: 105656, doi:10.1016/j.cretres.2023.105656, S2CID 259942879
  7. ^ a b Silva Junior JC, Martinelli AG, Marinho TS, da Silva JI, Langer MC (2022). "New specimens of Baurutitan britoi and a taxonomic reassessment of the titanosaur dinosaur fauna (Sauropoda) from the Serra da Galga Formation (Late Cretaceous) of Brazil". PeerJ. 10. e14333. doi:10.7717/peerj.14333. PMC 9673870. PMID 36405026.
  8. ^ a b c d Arthur S. Brum; Rodrigo V. Pêgas; Kamila L. N. Bandeira; Lucy G. Souza; Diogenes A. Campos; Alexander W. A. Kellner (2021). "A new unenlagiine (Theropoda, Dromaeosauridae) from the Upper Cretaceous of Brazil". Papers in Palaeontology. 7 (4): 2075–2099. Bibcode:2021PPal....7.2075B. doi:10.1002/spp2.1375. S2CID 238854675.
  9. ^ Salgado & De Carvalho, 2008

Bibliography

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