Queguay Formation
{{Short description|Geologic formation in Uruguay}}
{{Infobox rockunit
| name = Queguay Formation
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| type = Geological formation
| period = Late Cretaceous-Paleocene
| age = Late Cretaceous-Paleocene
~{{fossil range|100.5|56.0}}
| prilithology = limestone
| otherlithology =
| namedfor = Queguay River, Uruguay
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| country = Uruguay
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| overlies = Asencio Formation
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The Queguay Formation is a geologic formation in Uruguay.[https://www.researchgate.net/figure/Stratigraphic-profile-of-the-Queguay-Formation-in-the-type-section-Queguay-quarry-and_fig7_335313087 Stratigraphic profile of the Queguay Formation]
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
Several fossil gastropods have been found here:
- Bahiensis priscus Cabrera & Martínez, 2012{{Cite journal|author1=Cabrera, F. |author2=Martínez, S. |year=2012 |title=The oldest Odontostomidae (Mollusca: Gastropoda): Bahiensis priscus n. sp. (Paleocene, Uruguay) |journal=Paläontologische Zeitschrift|volume=86 |issue=4 |pages=451–456 |doi=10.1007/s12542-012-0145-1 |s2cid=128881268 }}
- Biomphalaria manya Cabrera & Martínez, 2018{{Cite journal|author1=Fernanda Cabrera |author2=Sergio Martínez |year=2018 |title=A new species of Biomphalaria Preston, 1910 (Gastropoda, Planorbidae) from the Upper Cretaceous of Uruguay |journal=Revista Brasileira de Paleontologia |volume=21 |issue=3 |pages=272–275 |doi=10.4072/rbp.2018.3.08 |doi-access=free |hdl=20.500.12008/22019 |hdl-access=free }}
- Biomphalaria reversa Cabrera, Martínez & Norbis, 2016{{Cite journal|author1=Fernanda Cabrera |author2=Sergio Martínez |author3=Walter Norbis |year=2016 |title=Recognition of Biomphalaria species (Gastropoda: Planorbidae) using the spiral growth variability, with description of a new fossil species |journal=The Nautilus |volume=130 |issue=1 |pages=5–12 |url=https://www.academia.edu/26088318 }}
- Bulimulus frenguellii Cabrera et al., 2021{{Cite journal|last1=Cabrera |first1=F. |last2=Breure |first2=A. S. H. |last3=Norbis |first3=W. |last4=Martínez |first4=S. |title=Description of a new Late Cretaceous species of Bulimulus Leach, 1814 (Orthalicoidea: Bulimulidae) using geometric morphometric analysis |year=2021 |journal=Journal of Molluscan Studies |volume=87 |issue=2 |pages=eyab006 |doi=10.1093/mollus/eyab006 }}
- Eoborus charruanus Frenguelli, 1930{{cite book |last=Frenguelli |first=J. |year=1930 |title=Apuntes de Geología Uruguaya |publisher=Instituto de Geología y Perforaciones}}
- Pupoides gnocco Cabrera & Martínez, 2017{{cite journal |url=https://www.colibri.udelar.edu.uy/jspui/handle/20.500.12008/24768 |title=Pupoides gnocco |year=2017 |journal=Journal of Conchology |last=Cabrera |first=Fernanda |last2=Martínez Chiappara |first2=Sergio Agustín }}
See also
References
{{Reflist}}
{{Stratigraphic formations of Uruguay}}
{{Authority control}}
{{coord missing|Uruguay}}
Category:Geologic formations of Uruguay
Category:Fossiliferous stratigraphic units of South America
Category:Paleontology in Uruguay
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