Itapecuru Formation
The Itapecuru Formation is a geological formation in Itapecuru Mirim, Maranhão, Brazil.
| Itapecuru Formation Stratigraphic range: Aptian-Cenomanian ~120–95 Ma | |
|---|---|
| Type | Geological formation |
| Underlies | Alluvium & Corda Formation |
| Overlies | Codó, Grajaú & Piauí Formations |
| Thickness | up to 2,000 m (6,600 ft) in São Luís Basin 700 m (2,300 ft) in Parnaíba Basin |
| Lithology | |
| Primary | Mudstone, sandstone |
| Other | Breccia, diamictite |
| Location | |
| Coordinates | 3°23′30″S 44°21′30″W |
| Approximate paleocoordinates | 8.6°S 15.9°W |
| Region | Itapecuru Mirim |
| Country |  |
| Extent | São Luís & Parnaíba Basins |
| Type section | |
| Named for | Itapecuru Mirim |
  Itapecuru Formation (Brazil) | |
It was formed during the Aptian to Albian stages of the Early Cretaceous.[1] Dinosaur remains are among the fossils that have been recovered from the formation.[2]
Vertebrate paleofauna
late Early Cretaceous (105 Ma)
- Theropod indet[2]
- Theropod tracks[2]
- Sauropod indet[2]
- Amazonsaurus maranhensis[2]
- Candidodon itapecuruense[3]
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See also
- Geologic formations of Brazil
- List of dinosaur-bearing rock formations
References
- 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.
- 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.
- Candidodon itapecuruense type locality at Fossilworks.org
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