Olmos Formation

{{Short description|Geologic formation in Mexico}} {{Infobox rockunit | name = Olmos Formation | image = | caption = | type = Formation | age = Late Campanian-Early Maastrichtian | period = Maastrichtian | prilithology = | otherlithology = | namedfor = | namedby = | region = Coahuila, Texas | country = Mexico, United States | coordinates = | unitof = | subunits = | underlies = | overlies = | thickness = | extent = | area = | map = | map_caption = }} [[File:Austin Chalk stratigraphic column in Texas.png|thumb|300px|Olmos Formation stratigraphic column in Texas]] The '''Olmos Formation''' is a geologic formation in Mexico. It preserves fossils of plants, hadrosaurs like ''Kritosaurus'',<ref>{{Cite book |last=Lucas |first=Spencer G. |url=https://www.google.com/books/edition/Late_Cretaceous_Vertebrates_from_the_Wes/rCDYCQAAQBAJ?hl=en&gbpv=0 |title=Late Cretaceous Vertebrates from the Western Interior: Bulletin 35 |last2=Sullivan |first2=Robert M. |date=2006 |publisher=New Mexico Museum of Natural History and Science |page=273 |language=en}}</ref> ceratopsians, tyrannosaurs and the turtle ''Palauchelys montellanoi'' dating back to the Cretaceous period.<ref>{{cite journal|last1=Estrada-Ruiz|first1=Emilio|last2=Martinez Cabrera|first2=Hugo I.|last3=RS Cevallos-Ferriz|first3=Sergio|title=Fossil woods from the late Campanian–early Maastrichtian Olmos Formation, Coahuila, Mexico |journal=Review of Palaeobotany and Palynology|date=June 2007|volume=145|issue=1|pages=123–133|doi=10.1016/j.revpalbo.2006.09.003|url=https://www.researchgate.net/publication/222248171}}</ref><ref>{{cite journal|last1=Upchurch|first1=G. R.|last2=Estrada-Ruiz|first2=E.|last3=Cevallos-Ferriz|first3=S. S.|title=Did tropical rainforest vegetation exist during the Late Cretaceous? New data from the late Campanian to early Maastrichtian Olmos Formation, Coahuila, Mexico.|journal=American Geophysical Union, Fall Meeting |volume=2008|pages=11D–07|date=December 2008|bibcode=2008AGUFMPP11D..07U}}</ref><ref>{{cite journal|last1=Estrada-Ruiz|first1=E.|last2=Martínez-Cabrera|first2=H.I.|last3=Cevallos-Ferriz|first3=S.R.|title=Upper Cretaceous woods from the Olmos Formation (late Campanian-early Maastrichtian), Coahuila, Mexico|journal=American Journal of Botany|date=July 2010|volume=97|issue=7|pages=1179–94|url=https://www.researchgate.net/publication/222248171|doi=10.3732/ajb.0900234|pmid=21616869}}</ref><ref>{{cite journal|last1=Alejandro Ramírez Velasco|first1=Angel|last2=Hernandez Rivera|first2=Rene|last3=Servin-Pichardo|first3=Ricardo|title=The Hadrosaurian Record from Mexico|journal=HADROSAURS, Chapter: Biogeography and Biostratigraphy|date=January 2014|pages=340–360|url=https://www.researchgate.net/publication/278018253}}</ref><ref>{{cite journal|last1=Gerardo Porras-Muzquiz|first1=Hector|last2=Lehman|first2=Thomas M.|title=A ceratopsian horncore from the Olmos Formation (early Maastrichtian) near Múzquiz, Mexico|journal=Revista Mexicana de Ciencias Geológicas|date=August 2011|volume=28|issue=2|pages=262–266|url=https://www.researchgate.net/publication/286279674}}</ref><ref>{{cite journal|last1=Ramírez-Velasco|first1=A. A|last2=Hernández-Rivera|first2=R.|title=Diversity of Late Cretaceous dinosaurs from Mexico|journal=Boletín Geológico y Minero|date=2015|volume=126|issue=1|pages=63–108|url=https://www.academia.edu/12268212|accessdate=28 September 2016}}</ref>

== See also == {{Portal|Earth sciences|Mexico|Paleontology}} * List of fossiliferous stratigraphic units in Mexico

== References == {{Reflist}} 7. Oliver A. López-Conde, Adán Pérez-García, María L. Chavarría-Arellano, Jesús Alvarado-Ortega, A new bothremydid turtle (Pleurodira) from the Olmos Formation (upper Campanian) of Coahuila, Mexico, Cretaceous Research, Volume 119. == External links == * {{cite web|title= Fossilworks: Gateway to the Paleobiology Database|author= ((Various Contributors to the Paleobiology Database))|url= https://www.fossilworks.org/|access-date= 17 December 2021|archive-date= 19 August 2022|archive-url= https://web.archive.org/web/20220819182839/https://www.fossilworks.org/|url-status= dead}}

Category:Geologic formations of Mexico Category:Cretaceous Mexico Category:Campanian Stage Category:Maastrichtian Stage of North America