Santa Maria Formation
| Santa Maria Formation Stratigraphic range: Upper Triassic and Middle Triassic |
|
|---|---|
 Santa Maria Formation. Source: UFSM |
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| Type | Geological formation |
| Location | |
| Coordinates | -29.695042, -53.795403 |
| Region | Geopark of Paleorrota in Rio Grande do Sul |
| Country |  Brazil |
The Santa Maria Formation is a sedimentary rock formation found in Rio Grande do Sul, Brazil. It has a late Ladinian – early Carnian age (Middle – Upper Triassic), and is notable for its fossils of early dinosaurs, including the herrerasaur Staurikosaurus, the basal saurischian Teyuwasu, and the basal sauropodomorph Saturnalia.[1] It received this name because it was discovered first in the city of Santa Maria.
The distinguished English paleontologist Arthur Smith Woodward determined the age of Santa Maria Formation dated Mesozoic Era, Upper Triassic period (about 220 million years).
The Santa Maria Formation is in the geopark of Paleorrota. [2] [3]
Contents |
Fauna [edit]
Vertebrates [edit]
An unnamed prosauropod species is present in Rio Grande do Sul.[1]
| Vertebrates reported from the Santa Maria Formation | ||||||
|---|---|---|---|---|---|---|
| Genus | Species | Location | Stratigraphic position | Material | Notes | Images |
|
Rio Grande do Sul.[1] |
A synapsid. |
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|
P. barberenai[5] |
Rio Grande do Sul.[5] |
|
"ULBRA-PVT016, disarticulated partial skeleton... including most skull bones"[5] |
A basal sauropodomorph dinosaur. |
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|
S. tupinquim[1] |
Rio Grande do Sul.[1] |
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A basal sauropodomorph dinosaur. |
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S. absconditum[1] |
Rio Grande do Sul.[1] |
|
"Various postcranial remains."[7] |
Might not be dinosaurian.[1] |
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|
S. pricei[1] |
Rio Grande do Sul.[1] |
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"Partial postcranial skeleton with mandible."[7] |
A herrerasaurid dinosaur. |
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|
T. barbarenai[1] |
Rio Grande do Sul.[1] |
|
"Right femur and tibia."[7] |
Might not be dinosaurian.[1] |
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|
T. riograndensis |
A synapsid. |
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See also [edit]
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Footnotes [edit]
- ^ a b c d e f g h i j k l m n o p q Weishampel, David B; et al (2004). "Dinosaur distribution (Late Triassic, South America)." In: Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. Pp. 527–528. ISBN 0-520-24209-2.
- ^ http://www.lenep.uenf.br/~severian/es-sm-sincro.html Formação Santa Maria, (in Portuguese)
- ^ http://www.pesquisasemgeociencias.ufrgs.br/arquivos/ARTIGO311.pdf Paleoformações, (in Portuguese)
- ^ Romer, A. S. The Brazilian cynodont reptiles Belesodon and Chiniquodon. Breviora, 1969a, 332, 1–16. Online: Biodiversity Heritage Library
- ^ a b c d e Cabreira, Sergio F.; Cesar L. Schultz, Jonathas S. Bittencourt, Marina B. Soares, Daniel C. Fortier, Lúcio R. Silva and Max C. Langer (2011). "New stem-sauropodomorph (Dinosauria, Saurischia) from the Triassic of Brazil". Naturwissenschaften 98 (12): 1035–1040. Bibcode:2011NW.....98.1035C. doi:10.1007/s00114-011-0858-0.
- ^ Langer, M.C., Abdala, F., Richter, M., and Benton, M. (1999). "A sauropodomorph dinosaur from the Upper Triassic (Carnian) of southern Brazil." Comptes Rendus de l'Académie des Sciences, 329: 511-;517.
- ^ a b c d e f "Table 2.1," in Weishampel, et al. (2004). Page 26.
- ^ "Table 12.1," in Weishampel, et al. (2004). Page 235.
References [edit]
- Weishampel, David B.; Dodson, Peter; and Osmólska, Halszka (eds.): The Dinosauria, 2nd, Berkeley: University of California Press. 861 pp. ISBN 0-520-24209-2.
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