Marília Formation

Marília Formation
Stratigraphic range: Maastrichtian
~70–66 Ma
↓
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°W / -19.6; -48.0Coordinates: 19°36′S 48°00′W / 19.6°S 48.0°W / -19.6; -48.0
Approximate paleocoordinates 23°06′S 33°54′W / 23.1°S 33.9°W / -23.1; -33.9
Region Goiás,
Minas Gerais,
São Paulo state
Country  Brazil
Extent Bauru Sub-basin, Paraná Basin
Type section
Named for Marília

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]

Vertebrate paleofauna

Crurotarsans

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.
Crocodylomorphs of the Marilia Formation
Genus Species Location Stratigraphic position Material Notes Images

Itasuchus[3]

I. jesuinoi

Area 2

Basal notosuchian
Itasuchus jesuinoi
Uberabasuchus terrificus

Labidiosuchus[4]

L. amicum

Serra do Veadinho, Area 2

A notosuchian with bizarre dentition.

Peirosaurus[3]

P. torminni

Area 2

A peirosaurid.

Uberabasuchus[3]

U. terrificus

Serra do Veadinho, Area 2

A peirosaurid

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

Aeolosaurus[3]

Indeterminate[3]

A titanosaurian

Baurutitan[3]

B. britoi

Area 1

A titanosaurian

Titanosaurus[3]

Indeterminate[3]

Area 1

A titanosaurian

Trigonosaurus[3]

T. pricei

Area 1

A titanosaurian

Uberabatitan[5]

U. ribeiroi

A titanosaurian

See also

References

  1. ↑ Marília Formation at Fossilworks.org
  2. ↑ Weishampel, David B; et al. (2004). "Dinosaur distribution (Late Cretaceous, South America)." In: Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. Pp. 600-604. ISBN 0-520-24209-2.
  3. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 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.
  4. ↑ Alexander W. A. Kellner; Rodrigo G. Figueiredo; Sergio A. K. Azevedo; Diogenes A. Campos (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.
  5. ↑ Salgado, Leonardo; 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. doi:10.1111/j.1475-4983.2008.00781.x.

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