Tremembé Formation

Tremembé Formation
Stratigraphic range: Deseadan
Location
Coordinates12°54′S 38°30′W / 12.9°S 38.5°W / -12.9; -38.5
Approximate paleocoordinates12°42′S 5°42′W / 12.7°S 5.7°W / -12.7; -5.7
RegionSão Paulo
CountryBrazil
ExtentTaubaté Basin
Type section
Named forTremembé
Tremembé Formation (Brazil)

The Tremembé Formation is a major Oligocene geological formation within the Taubaté Basin of Brazil. It is notable for its fossils.

Location

The Tremembé Formation located within the Taubaté Basin in the state of São Paulo.[1]

Geology

The formation is characterized by lacustrine deposits[2] which were laid down during the Oligocene.[3]

Paleontology

The Tremembé Formation contains many fossils which are of interest to paleontologists.[1][4] Fish are particularly well preserved.[5] Among other mammals significant Sparassodonta and Proborhyaenidae finds have been made.[6]

Fossil content

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.

Amphibians

Amphibians of the Tremembé Formation
Genus Species Location Stratigraphic position Material Notes Images
Ymboirana Y. acrux A thiphlonectid caecilian

Birds

Birds of the Tremembé Formation
Genus Species Location Stratigraphic position Material Notes Images
Agnopterus A. sicki A phoenicopterid phoenicopteriform
Ameripodius A. silvasantosi A quercymegapodiid pangalliform
Brasilogyps B. faustoid A catharid cathartiform
Chaunoides C. antiquus A anhimid anseriform
Hoazinavis H. lacustris A opisthocomid opisthocomiform
Palaeodus P. ambiguus A phoenicopterid phoenicopteriform
Paraphysornis P. brasilensis A physornithine phorusrhacid
Taubacrex T. granivora A quercymegapodiid pangalliform
Taubatornis T. campbelli A teratornithid cathartiform

Reptiles

Crocodylomorphs

Crocodylomorphs of the Tremembé Formation
Genus Species Location Stratigraphic position Material Notes Images
Caiman C. tremembensis A caimanine alligatorid

Lepidosaurs

Lepidosaurs of the Tremembé Formation
Genus Species Location Stratigraphic position Material Notes Images

Testudines

Testudines of the Tremembé Formation
Genus Species Location Stratigraphic position Material Notes Images

Fish

Fishes of the Tremembé Formation
Genus Species Location Stratigraphic position Material Notes Images
Brycon B. alvus A bryconine bryconid
Cyphocharax C. rosesi A curimatid toothless characin
Lignobrycon L. ligniticus A triportheine triportheid
Megacheinodon M. unicus A cheinodontine charanid
Plesiocurimata P. alvarengai A curomatid toothless characin
Santosius S. antiquus A Perchicthyid centrarchiform
Steindachneridion S. iherengi pimelodid siluriform
S. silvasantosi
Taubateia T. paraiba loricariid siluriform
Tremembichthys T. garciae A chichlasomatin chichline
T. pauloensis

Mammals

Meridiolestidans

Meridiolestidans of the Tremembé Formation
Genus Species Location Stratigraphic position Material Notes Images

Meridiungulates

Meridiungulates of the Tremembé Formation
Genus Species Location Stratigraphic position Material Notes Images
Astrapotheria Indet. Indeterminate
Rhynchippus R. brasiliensis A notohippid notoungulate
Taubatherium T. paulacoutoi A leontiniid notoungulate

Xenarthrans

Xenarthrans of the Tremembé Formation
Genus Species Location Stratigraphic position Material Notes Images
Eocoelophorus E. glyptodontoides An armadillo

Metatherians

Metatherians of the Tremembé Formation
Genus Species Location Stratigraphic position Material Notes Images
Proborhyaenidae Indet. Indeterminate

Rodents

Rodents of the Tremembé Formation
Genus Species Location Stratigraphic position Material Notes Images
Acarechimys A. minutus A eumysopine echimyid
Paulacoutomys P. paulista A echimyid octodontoid

Primates

Primates of the Tremembé Formation
Genus Species Location Stratigraphic position Material Notes Images

Bats

Bats of the Tremembé Formation
Genus Species Location Stratigraphic position Material Notes Images
Mormopterus M. faustoi An free-tailed bat

Insects

Insect of the Tremembé Formation
Genus Species Location Stratigraphic position Material Notes Images
Taubaracne T. maculosa An spider

References

  1. ^ a b Bergue, Cristianini; Maranhão, Maria; Fauth, Gerson (2015-07-29). "Paleolimnological inferences based on Oligocene ostracods (Crustacea: Ostracoda) from Tremme Formation, Southeast Brazil". Anais da Academia Brasileira de Ciências. 87 (3): 1531–1544. doi:10.1590/0001-3765201520140366. PMID 26221982.
  2. ^ dos Santos Lima, Luana; Ismael de Araújo-Júnior, Hermínio; Henrique de Souza Barbosa, Fernando (June 2025). "First record of a bird footprint in Brazil (Oligocene of the Taubaté Basin) and its paleoenvironmental implications". Journal of Ornithology. Bibcode:2025JOrni.tmp...76D. doi:10.1007/s10336-025-02305-0. Retrieved 7 September 2025.{{cite journal}}: CS1 maint: bibcode (link)
  3. ^ Di Gregorio, Enrico. "Fossilized feces contain traces of parasites that can still infect animals". revistapesquisa.fapesp.br. Pesquisa FAPESP. Retrieved 7 September 2025.
  4. ^ Macêdo Do Carmo, Gustavo; Bisaggio Pereira, Felipe; De Souza Lima, Sueli; Ismael De Araújo-Júnior, Hermínio; Maturano Pinheiro, Ralph (June 2024). "Protozoan parasites of birds from the Tremembé formation (Oligocene of the Taubaté Basin), São Paulo, Brazil". Int J Paleopathol. 45: 46–54. Bibcode:2024IJPal..45...46D. doi:10.1016/j.ijpp.2024.04.003. PMID 38657471.
  5. ^ Felipe Oliveira Macena de Santana, João; Ismael de Araújo-Júnior, Hermínio; José de Figueiredo, Francisco; Aparecida dos Reis Polck, Márcia; Vinícius Berao Ade, Marcus (November 2023). "Taphonomy of the fish fauna of the Tremembé Formation (Oligocene of the Taubaté basin), Southeastern Brazil". Journal of South American Earth Sciences. 131 104599. Bibcode:2023JSAES.13104599O. doi:10.1016/j.jsames.2023.104599. Retrieved 7 September 2025.
  6. ^ César Rangel, Caio; do Couto-Ribeiro, Graziella; Maurício Grachien Guimarães, Bruno; Vicente Oliveira, Edison; Höfling, Elizabeth (2025-08-05). "The 'swamp monster' of the Tremembé Formation (Taubaté Basin, Brazil; late Oligocene): a description of a carnivorous metatherian (Sparassodonta, Proborhyaenidae)". Revista Brasileira de Paleontologia. 28 (2): e20250534. Bibcode:2025RvBrP..28E0534R. doi:10.4072/rbp.2025.2.0534. Retrieved 7 September 2025.
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