Queguay Formation
| Queguay Formation | |
|---|---|
| Stratigraphic range: Late Cretaceous-Paleocene ~ | |
| Type | Geological formation |
| Overlies | Asencio Formation |
| Lithology | |
| Primary | limestone |
| Location | |
| Country |  Uruguay |
| Type section | |
| Named for | Queguay River, Uruguay |
The Queguay Formation is a geologic formation in Uruguay.[1]
It consists of a lithological group composed of calcareous, calc-siliceous and siliceous rocks, of pedogenic or subterranean origin. It is formed by white and whitish limestones, massive, sandy and brecciated.
Vertebrate paleofauna
[edit]Several fossil gastropods have been found here:
- Bahiensis priscus Cabrera & Martínez, 2012[2]
- Biomphalaria manya Cabrera & Martínez, 2018[3]
- Biomphalaria reversa Cabrera, Martínez & Norbis, 2016[4]
- Bulimulus frenguellii Cabrera et al., 2021[5]
- Eoborus charruanus Frenguelli, 1930[6]
- Pupoides gnocco Cabrera & Martínez, 2017[7]
See also
[edit]References
[edit]- ^ Stratigraphic profile of the Queguay Formation
- ^ Cabrera, F.; Martínez, S. (2012). "The oldest Odontostomidae (Mollusca: Gastropoda): Bahiensis priscus n. sp. (Paleocene, Uruguay)". Paläontologische Zeitschrift. 86 (4): 451–456. doi:10.1007/s12542-012-0145-1. S2CID 128881268.
- ^ Fernanda Cabrera; Sergio Martínez (2018). "A new species of Biomphalaria Preston, 1910 (Gastropoda, Planorbidae) from the Upper Cretaceous of Uruguay". Revista Brasileira de Paleontologia. 21 (3): 272–275. doi:10.4072/rbp.2018.3.08.
- ^ Fernanda Cabrera; Sergio Martínez; Walter Norbis (2016). "Recognition of Biomphalaria species (Gastropoda: Planorbidae) using the spiral growth variability, with description of a new fossil species". The Nautilus. 130 (1): 5–12.
- ^ Cabrera, F.; Breure, A. S. H.; Norbis, W.; Martínez, S. (2021). "Description of a new Late Cretaceous species of Bulimulus Leach, 1814 (Orthalicoidea: Bulimulidae) using geometric morphometric analysis". Journal of Molluscan Studies. 87 (2): eyab006. doi:10.1093/mollus/eyab006.
- ^ Frenguelli, J. (1930). Apuntes de Geología Uruguaya. Instituto de Geología y Perforaciones.
- ^ Cabrera, Fernanda; Martínez Chiappara, Sergio Agustín (2017). "Pupoides gnocco". Journal of Conchology.
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Categories:
- Queguay Formation
- Geologic formations of Uruguay
- Fossiliferous stratigraphic units of South America
- Geography of Durazno Department
- Geography of Paysandú Department
- Geography of Río Negro Department
- Geography of Soriano Department
- Paleontology in Uruguay
- Cretaceous Uruguay
- Paleocene Uruguay
- Maastrichtian
- Uruguay geography stubs
- South American geologic formation stubs