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Santa Maria, Rio Grande do Sul, Brazil

Formation	Santa Maria
Member(s)	Alemoa Lower
Age:	228 - 201 Ma Mesozoic
Interval	Middle Triassic
Lithology	sandstone/conglomerate, sandstone/siltstone, mudstone, sandstone
Number of Collections	8
Number of Occurrences	33

Recorded Sample Locations

Location	Region	Stratigraphic Name
Passo das Tropas and Parque Dom Antonio Reis	Santa Maria, Rio Grande do Sul, Brazil	Santa Maria
Alemõa	Santa Maria, Rio Grande do Sul, Brazil	Santa Maria - Alemoa
Passo das Tropas	Santa Maria, Rio Grande do Sul, Brazil	Santa Maria
Candelaria	Rio Grande do Sul, Brazil	Santa Maria
Dona Francisca	Rio Grande do Sul, Brazil	Santa Maria
Posto de Gasolina	Rio Grande do Sul, Brazil	Santa Maria
Unknown locality south of Candelaria	Rio Grande do Sul, Brazil	Santa Maria
Cachoeira do Sul	Rio Grande do Sul, Brazil	Santa Maria - Alemoa

Associated Units

Stratigraphic Name	Age	Lithology	Occurrence Records
Santa Maria - Alemoa	237 - 228 Ma Late/Upper Triassic	sandstone/siltstone	2
Santa Maria - Lower	242 - 237 Ma Middle Triassic	siltstone	1
Rosario do Sul - Sanga do Cabral	252 - 247 Ma Phanerozoic	conglomerate/sandstone, conglomerate, "siliciclastic", sandstone/conglomerate	24
Rosario do Sul - Santa Maria - Alemoa	237 - 209 Ma Late/Upper Triassic	mudstone, siltstone, sandstone, sandstone/siltstone, mudstone/sandstone, claystone	87

Recorded Fossils

Accepted Name	Type	Hierarchy	Age
Neocalamites sp. genus	6	Plantae : Tracheophyta : Polypodiopsida : Equisetales : Calamitaceae : *Neocalamites*	242 - 237 Ma Middle Triassic
Zuberia sp. genus	6	*Zuberia*	242 - 237 Ma Middle Triassic
Dicroidium sp. genus	6	Plantae : Peltaspermophyta : Peltaspermopsida : Peltaspermales : Umkomasiaceae : *Dicroidium*	247.2 - 237 Ma Triassic
Pachypteris sp. genus	6	Plantae : Tracheophyta : Umkomasiaceae : *Pachypteris*	242 - 237 Ma Middle Triassic
Pteruchus sp. genus	6	Plantae : Peltaspermophyta : Peltaspermopsida : Peltaspermales : Umkomasiaceae : *Pteruchus*	247.2 - 237 Ma Triassic
Samaropsis sp. genus	6	Plantae : Tracheophyta : Pinopsida : Cordaitaceae : *Samaropsis*	242 - 237 Ma Middle Triassic
Estherites wianamatensis species	7	Animalia : Arthropoda : Branchiopoda : Diplostraca : Lioestheriidae : Estherites : *Estherites wianamatensis*	242 - 237 Ma Middle Triassic
Euestheria azambujai species	7	Animalia : Arthropoda : Branchiopoda : Diplostraca : Lioestheriidae : Euestheria : *Euestheria azambujai*	242 - 237 Ma Middle Triassic
Estheriina sp. genus	6	Animalia : Arthropoda : Branchiopoda : Diplostraca : Limnadiidae : *Estheriina*	242 - 237 Ma Middle Triassic
Triassoblatta cargnini species	7	Animalia : Arthropoda : Insecta : Blattodea : Triassoblattidae : Triassoblatta : *Triassoblatta cargnini*	242 - 237 Ma Middle Triassic
Sanctipaulus mendesi species	7	Animalia : Arthropoda : Insecta : Trichoptera : Sanctipaulus : *Sanctipaulus mendesi*	242 - 237 Ma Middle Triassic
Stahleckeria potens species	7	Animalia : Chordata : Osteichthyes : Cotylosauria : Stahleckeriidae : Stahleckeria : *Stahleckeria potens*	247.2 - 237 Ma Triassic
Pagosvenator candelariensis species	7	Animalia : Chordata : Reptilia : Erpetosuchidae : Pagosvenator : *Pagosvenator candelariensis*	242 - 228 Ma Triassic
Decuriasuchus quartacolonia species	7	Animalia : Chordata : Reptilia : Decuriasuchus : *Decuriasuchus quartacolonia*	247.2 - 237 Ma Triassic
Prestosuchus chiniquensis species	7	Animalia : Chordata : Reptilia : Prestosuchus : *Prestosuchus chiniquensis*	247.2 - 201.3 Ma Mesozoic
Staurikosaurus pricei species	7	Animalia : Chordata : Reptilia : Dinosauria : Herrerasauridae : Staurikosaurus : *Staurikosaurus pricei*	237 - 228 Ma Late/Upper Triassic

References

Pinto I. D. (1956) Artopods da Formacao Santa Maria (Triassico Superior) Do Rio Grande do Sul, com noticias sobre alguns restos vegetais, Boletim da Sociedade Brasileira de Geologia 5 1, 75-87

Colbert E. H. (1970) A saurischian dinosaur from the Triassic of Brazil, American Museum Novitates 2405, 1-39

Pinto I. D., de Ornellas L. P. (1974) A new insect Triassoblatta cargnini Pinto et Ornellas, sp. nov., a Triassic blattoid from Santa Maria Formation, south Brazil, Anais da Academia Brasileira de Ciências 46, 515-521

Barberena M. (1978) A huge thecodont skull from the Triassic of Brazil, Pesquisas 7, 111-129

Sommer M. G., Klepzig M.C., et al (1985) A tafoflora Triassica da Formacao Santa Maria, Bacia do Parana, Brasil e sua importancia bioestratigrafica, Memoria, III Congreso Latinoamericano de Paleontologia. Simposio sobre floras del Triasico tardio, su fitogeografia y paleoecologia., 33-41

Lucas S. G. (2002) A new dicynodont from the Triassic of Brazil and the tetrapod biochronology of the Brazilian Triassic, New Mexico Museum of Natural History and Science Bulletin 21, 131-141

De Franca M. A. G., Langer M. C. (2013) The skull anatomy of Decuriasuchus quartacolonia (Pseudosuchia: Suchia: Loricata) from the middle Triassic of Brazil, Geological Society Special Publication 379, 469-501

Mastrantonio B., Schultz C. (2013) The braincase of Prestosuchus chiniquensis (Archosauria: Suchia), Geological Society Special Publications 379, 425-440

Lacerda M. B., de França M. A. G., et al (2018) A new erpetosuchid (Pseudosuchia, Archosauria) from the Middle–Late Triassic of Southern Brazil, Zoological Journal of the Linnean Society, 1-21 doi:10.1093/zoolinnean/zly008

Data courtesy of: PBDB: The Paleobiology Database, Creative Commons CC-BY licenced. , GBIF: the Global Biodiversity Information Facility, various licences, iDigBio, various licences, and EOL: The Encyclopedia of Life (Open Data Public Domain). Because fossils are made of minerals too!

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