The geologically youngest remains of an ornithocheirid pterosaur from the late Cenomanian (Late Cretaceous) of northeastern Mexico with implications on the paleogeography and extinction of Late Cretaceous ornithocheirids

2020 ◽  
Vol 43 (1) ◽  
pp. e4
Author(s):  
Eberhard Dino Frey ◽  
Wolfgang Stinnesbeck ◽  
David M. Martill ◽  
Héctor E. Rivera-Sylva ◽  
Héctor Porras Múzquiz
Keyword(s):  
Late Cretaceous ◽  
Northeastern Mexico

Late Cretaceous (Turonian) fish assemblage from Vallecillo, Northeastern Mexico

2002 ◽  
Vol 225 (1) ◽  
pp. 39-54 ◽  
Author(s):  
Alberto Blanco-Piñón ◽  
Eberhard Frey ◽  
Wolfgang Stinnesbeck ◽  
José Guadalupe López Oliva
Keyword(s):  
Late Cretaceous ◽  
Fish Assemblage ◽  
Northeastern Mexico

Altered volcanic ash layers of the Late Cretaceous San Felipe Formation, Sierra Madre Oriental (Northeastern Mexico): U Pb geochronology, provenance and tectonic setting

2016 ◽  
Vol 70 ◽  
pp. 18-35 ◽  
Author(s):  
Fernando Velasco-Tapia ◽  
Margarita Martínez-Paco ◽  
Alexander Iriondo ◽  
Yam Zul Ernesto Ocampo-Díaz ◽  
Esther María Cruz-Gámez ◽  
...  
Keyword(s):  
Late Cretaceous ◽  
Volcanic Ash ◽  
Tectonic Setting ◽  
Sierra Madre Oriental ◽  
Sierra Madre ◽  
Northeastern Mexico

A Late Cretaceous marine long snout “pejelagarto” fish (Lepisosteidae, Lepisosteini) from Múzquiz, Coahuila, northeastern Mexico

2016 ◽  
Vol 57 ◽  
pp. 19-28 ◽  
Author(s):  
Jesús Alvarado-Ortega ◽  
Paulo M. Brito ◽  
Héctor Gerardo Porras-Múzquiz ◽  
Irene Heidi Mújica-Monroy
Keyword(s):  
Late Cretaceous ◽  
Northeastern Mexico

Late Cretaceous fish cans: Fish preserved in ammonite body chambers from the middle Santonian of Coahuila State, northeastern Mexico

2014 ◽  
Vol 273 (1) ◽  
pp. 75-88 ◽  
Author(s):  
Torrey Nyborg ◽  
Christina Ifrim ◽  
Josep A. Moreno-Bedmar ◽  
Hector Porras Múzquiz ◽  
Samuel Giersch ◽  
...  
Keyword(s):  
Late Cretaceous ◽  
Northeastern Mexico

Late Cretaceous and Paleogene freshwater gastropods from Northeastern Mexico

2008 ◽  
Vol 82 (2) ◽  
pp. 255-266 ◽  
Author(s):  
María Del Carmen Perrilliat ◽  
Francisco J. Vega ◽  
Belinda Espinosa ◽  
Edna Naranjo-Garcia
Keyword(s):  
New Species ◽  
Late Cretaceous ◽  
Brackish Water ◽  
Freshwater Gastropods ◽  
Water Influence ◽  
Fine Grained ◽  
Living Species ◽  
Northeastern Mexico

Twenty-three species of Campanian, Maastrichtian, Paleocene, and Eocene freshwater gastropods from northeastern Mexico are described, including eight new species:Viviparus mcbridei, Pachychilus(Pachychiloides)lawtoni, Melanoides(Melanoides)yolandae, Melanoides(Melanoides)wollebeni, Physa cepedaensis, Mesolanistes magnus, Mesolanistes murrayi, andGyraulus zoltani.Specimens were collected from fine-grained, green sandstone and mudstone, red mudstone, and as hematized remains in fine light-brown sandstones belonging to the following stratigraphic units of northeastern Mexico: Cerro del Pueblo (Campanian, Parras Basin), Olmos (Maastrichtian, Sabinas Basin), Las Encinas (Paleocene, Parras Basin), and Carroza (Eocene, La Popa Basin) Formations. All except two of the genera (?PyrguliferaandMesolanistes) have recent representatives. Review of habitats of living species of the six extant genera and interpretations of sample lithologies support the inference of dominantly freshwater paleoenvironments. Only one Maastrichtian locality is interpreted confidently to have had a brackish water influence.

Epizoic stramentid cirripedes on ammonites from Late Cretaceous platy limestones in Mexico

2011 ◽  
Vol 85 (3) ◽  
pp. 524-536 ◽  
Author(s):  
Christina Ifrim ◽  
Francisco J. Vega ◽  
Wolfgang Stinnesbeck
Keyword(s):  
Late Cretaceous ◽  
Water Levels ◽  
Benthic Organism ◽  
Nuevo Leon ◽  
Nuevo León ◽  
Anoxic Events ◽  
Mode Of Life ◽  
Oxygenated Water ◽  
Northeastern Mexico ◽  
Platy Limestone

The discovery of platy limestone deposits in northeastern Mexico has led to the collection of well-preserved stramentids of early Turonian age from Vallecillo, state of Nuevo León, and of early Coniacian age from El Carranza, state of Coahuila.Stramentum(Stramentum)pulchellum(Sowerby, 1843) colonized the ammonite shells during the lifetime of the animals, occasionally in two subsequent generations. Colonization of the ammonite shell byStramentum(S.)pulchellumwas hindered by strong ornamentation only. The ammonites did not interfere with their epizoans. Colonization during lifetime shows that these ammonites dwelled in well-oxygenated water levels near the surface, and most stramentids were embedded alive. The known paleobiogeographic occurrence ofStramentum(S.)pulchellumand its long stratigraphic occurrence are considerably enlarged by our findings. The pseudoplanktonic mode of life ofStramentum, and attachment to ammonite shells, may have been a response of a once benthic organism to repeated oxygen-deficient conditions on the seafloor of mid-Cretaceous oceans, i.e., to oceanic anoxic events (OAEs).

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