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 ~ | |
| Type | Geological formation |
| Unit of | Bauru Group |
| Overlies | Uberaba Formation Adamantina Formation |
| Lithology | |
| Primary | Sandstone |
| Other | Mudstone, siltstone, limestone, paleosol |
| Location | |
| Coordinates | 19°36′S 48°00′W / 19.6°S 48.0°W |
| Approximate paleocoordinates | 23°06′S 33°54′W / 23.1°S 33.9°W |
| Region |  Minas Gerais |
| Country |  Brazil |
| Extent | Bauru Sub-basin, Paraná Basin |
| Type section | |
| Named for | Serra da Galga |
  Serra da Galga Formation (Brazil) | |
Dinosaur remains are among the fossils that have been recovered from the formation.[3]
Fossil content
editCrurotarsans
edit| 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
editThree 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
editReferences
edit- ^ Marília Formation at Fossilworks.org
- ^ 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.
- ^ Weishampel et al., 2004, pp. 600-604
- ^ a b c d e f g h i j k l m n Candeiro, 2009
- ^ Kellner et al., 2011
- ^ 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
- ^ 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.
- ^ 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.
- ^ Salgado & De Carvalho, 2008
Bibliography
edit- Candeiro, C.R.A (2009). "Vertebrates of the Marília Formation (late Maastrichtian) from the Peirópolis paleontological site: Toward a better understanding" (PDF). Earth Sciences Research Journal. 13 (1): 6–15. Archived from the original (PDF) on 2012-03-10. Retrieved 2019-02-16.
- Kellner, Alexander W.A.; Figueiredo, Rodrigo G.; Azevedo, Sergio A.K.; Campos, Diogenes A. (2011). "A new cretaceous notosuchian (Mesoeucrocodylia) with bizarre dentition from Brazil". Zoological Journal of the Linnean Society. 163 (s1): S109–S115. doi:10.1111/j.1096-3642.2011.00711.x. Retrieved 2019-02-16.
- Salgado, Leonardo; De Carvalho, Ismar de Souza (2008). "Uberabatitan ribeiroi, a new titanosaur from the Marília Formation (Bauru Group, Upper Cretaceous), Minas Gerais, Brazil". Palaeontology. 51 (4): 881–901. Bibcode:2008Palgy..51..881S. doi:10.1111/j.1475-4983.2008.00781.x. S2CID 128831758. Retrieved 2019-02-16.
- Weishampel, David B.; Dodson, Peter; Osmólska, Halszka, eds. (2004). The Dinosauria (2nd ed.). Berkeley: University of California Press. pp. 1–880. ISBN 0-520-24209-2. Retrieved 2019-02-21.