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Itapecuru Formation

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Geological formation in Brazil
Itapecuru Formation
Stratigraphic range: Aptian-Cenomanian
~120–95 Ma PreꞒ Ꞓ O S D C P T J K Pg N
TypeGeological formation
UnderliesAlluvium & Corda Formation
OverliesCodó, Grajaú & Piauí Formations
Thicknessup to 2,000 m (6,600 ft) in São Luís Basin
700 m (2,300 ft) in Parnaíba Basin
Lithology
PrimaryMudstone, sandstone
OtherBreccia, diamictite
Location
Coordinates3°23′30″S 44°21′30″W / 3.39167°S 44.35833°W / -3.39167; -44.35833
Approximate paleocoordinates8°36′S 15°54′W / 8.6°S 15.9°W / -8.6; -15.9
RegionItapecuru Mirim
 Maranhão
Country Brazil
ExtentSão Luís & Parnaíba Basins
Type section
Named forItapecuru Mirim
Itapecuru Formation is located in BrazilItapecuru FormationItapecuru Formation (Brazil)

The Itapecuru Formation is a geological formation in Itapecuru Mirim, Maranhão, Brazil.

It was formed during the Aptian to Albian stages of the Early Cretaceous. Dinosaur remains are among the fossils that have been recovered from the formation.

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.

Dinosaurs

Sauropods

Sauropods of the Itapecuru Formation
Genus Species Location Stratigraphic position Material Notes Images
Amazonsaurus A. maranhensis A rebbachisaurid sauropod
Sauropoda indet. Indeterminate

Theropods

Theropods of the Itapecuru Formation
Genus Species Location Stratigraphic position Material Notes Images
Abelisauridae Indet. Indeterminate
Carcharodontosauridae Indet. Indeterminate
Spinosauridae Indet. Indeterminate
Theropoda indet. Indeterminate

Crocodylomorphs

Crocodylomorphs of the Itapecuru Formation
Genus Species Location Stratigraphic position Material Notes Images
Candidodon C. itapecuruense A candidodontid notosuchian

Turtles

Turtles of the Itapecuru Formation
Genus Species Location Stratigraphic position Material Notes Images
Itapecuruemys I. amazoniensis A bothremydid turtle

See also

References

  1. Ferreira, Neila N.; Ferreira, Elizabete P.; Ramos, Renato R.C.; Carvalho, Ismar S. (2016). "Palynological and sedimentary analysis of the Igarapé Ipiranga and Querru 1 outcrops of the Itapecuru Formation (Lower Cretaceous, Parnaíba Basin), Brazil". Journal of South American Earth Sciences. 66: 15–31. Bibcode:2016JSAES..66...15F. doi:10.1016/j.jsames.2015.12.005. ISSN 0895-9811.
  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. de Souza Carvalho, Ismar; dos Santos Avilla, Leonardo; Salgado, Leonardo (2003). "Amazonsaurus maranhensis gen. et sp. nov. (Sauropoda, Diplodocoidea) from the Lower Cretaceous (Aptian–Albian) of Brazil". Cretaceous Research. 24 (6). Elsevier BV: 697–713. Bibcode:2003CrRes..24..697D. doi:10.1016/j.cretres.2003.07.005. ISSN 0195-6671.
  4. Candidodon itapecuruense type locality at Fossilworks.org
  5. Batista, Diego L.; de Sousa Carvalho, I.; de la Fuente, M.S. (2020). "A new Cretaceous (Pleurodira: Pelomedusoides) from the Lower Cretaceous of Parnaíba Basin, Brazil": Journal of South American Earth Sciences. https://doi.org/10.1016/j.jsames.2020.102872
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