Marília Formation

Marília Formation
Stratigraphic range: Maastrichtian
~70–66 Ma

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Marília Formation; Stratigraphic range: Maastrichtian; ~70–66 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Type	Geological formation
Unit of	Bauru Group
Overlies	Uberaba Formation
Lithology
Primary	Sandstone
Other	Mudstone, siltstone, limestone
Location
Coordinates	19°36′S 48°00′W / 19.6°S 48.0°WCoordinates: 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	Goiás ; Minas Gerais ; São Paulo
Country	Brazil
Extent	, Paraná Basin
Type section
Named for	Marília
	Marília Formation (Brazil)

The Marília Formation is a geological formation in Goiás, Minas Gerais, and São Paulo states of southeastern Brazil. Its strata date back to the Maastrichtian, and are part of the Bauru Group.^[1]

Dinosaur remains are among the fossils that have been recovered from the formation.^[2]

Fossil content[]

Crurotarsans[]

Crocodylomorphs of the Marilia Formation
Genus	Species	Location	Notes	Images
Itasuchus	I. jesuinoi	Area 2	Basal notosuchian^[3]
Labidiosuchus	L. amicum	Serra do Veadinho, Area 2	A notosuchian with bizarre dentition^[4]
Peirosaurus	P. torminni	Area 2	A peirosaurid^[3]
Uberabasuchus	U. terrificus	Serra do Veadinho, Area 2	A peirosaurid^[3]

Ornithodirans[]

Three distinct titanosaurids denoted as forms A, B, and C have been found in Area 4.^[3] Titanosaurine remains are known from Areas 1 and 2.^[3] Indeterminate theropod remains known from Area 1.^[3] Indeterminate maniraptor remains known from Area 1.^[3] Indeterminate abelisaurid remains are known from Areas 1 and 2.^[3] Indeterminate Carcharodontosaurid remains are known from Area 1.^[3]

Dinosaurs of the Marilia Formation
Genus	Species	Location	Stratigraphic position	Material	Notes	Images
Aeolosaurus^[3]	Indeterminate				A titanosaurian^[3]
Baurutitan	B. britoi	Area 1			A titanosaurian^[3]
Kurupi	K. itaata				An abelisaurid^[5]
"Lopasaurus"^[6]	None given				A dromaeosaur. The holotype went missing shortly after 1980 and it has not been recovered since^[6]
Trigonosaurus	T. pricei	Area 1			A titanosaurian^[3]
Uberabatitan^[7]	U. ribeiroi				A titanosaurian^[3]
Ypupiara^[6]	Y. lopai				A dromeosaur^[6]

References[]

^ Marília Formation at Fossilworks.org
^ 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
^ "New theropod dinosaur from the late Cretaceous of Brazil improves abelisaurid diversity". Journal of South American Earth Sciences: 103551. 2021-09-04. doi:10.1016/j.jsames.2021.103551. ISSN 0895-9811.
^ ^a ^b ^c ^d Brum, Arthur Souza, Pêgas, Rodrigo Vargas, Bandeira, Kamila Luisa Nogueira, Souza, Lucy Gomes de, Campos, Diogenes de Almeida, & Kellner, Alexander Wilhelm Armin (2021). "A new unenlagiine (Theropoda, Dromaeosauridae) from the Upper Cretaceous of Brazil". Papers in Palaeontology. doi:10.1002/spp2.1375.CS1 maint: uses authors parameter (link)
^ Salgado & De Carvalho, 2008

Bibliography[]

Candeiro, C.R.A. 2009. Vertebrates of the Marília Formation (late Maastrichtian) from the Peirópolis paleontological site: Toward a better understanding. 13. 6–15. Accessed 2019-02-16.
Kellner, Alexander W.A.; Rodrigo G. Figueiredo; Sergio A.K. Azevedo, and Diogenes A. Campos. 2011. A new cretaceous notosuchian (Mesoeucrocodylia) with bizarre dentition from Brazil. Zoological Journal of the Linnean Society 163. S109–S115. Accessed 2019-02-16.
Salgado, Leonardo, and Ismar de Souza De Carvalho. 2008. Uberabatitan ribeiroi, a new titanosaur from the Marília Formation (Bauru Group, Upper Cretaceous), Minas Gerais, Brazil. Palaeontology 51. 881–901. Accessed 2019-02-16.
Weishampel, David B.; Peter Dodson, and Halszka Osmólska (eds.). 2004. The Dinosauria, 2nd edition, 1–880. Berkeley: University of California Press. Accessed 2019-02-21. ISBN 0-520-24209-2

[1] Marília Formation at Fossilworks.org

[cretaceousdistribution-2] Weishampel et al., 2004, pp. 600-604

[Candeiro09-3] ^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k ^l ^m ⁿ Candeiro, 2009

[Labidiosuchus-4] Kellner et al., 2011

[5] "New theropod dinosaur from the late Cretaceous of Brazil improves abelisaurid diversity". Journal of South American Earth Sciences: 103551. 2021-09-04. doi:10.1016/j.jsames.2021.103551. ISSN 0895-9811.

[Brum2021-6] Brum, Arthur Souza, Pêgas, Rodrigo Vargas, Bandeira, Kamila Luisa Nogueira, Souza, Lucy Gomes de, Campos, Diogenes de Almeida, & Kellner, Alexander Wilhelm Armin (2021). "A new unenlagiine (Theropoda, Dromaeosauridae) from the Upper Cretaceous of Brazil". Papers in Palaeontology. doi:10.1002/spp2.1375.CS1 maint: uses authors parameter (link)

[SC08-7] Salgado & De Carvalho, 2008

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