Results 31 to 40 of about 54,285 (147)

The lower deciduous dentition of protodidelphids (Mammalia, Marsupialia) from the Itaboraí Basin (lower Eocene), Brazil, and the validity of “Riolestes capricornicus” (Goin et al., 2009)

The Anatomical Record, EarlyView.
Abstract The Itaboraí Basin, Southeastern Brazil, preserved one of the most diverse mammalian faunas from the Paleogene, with Metatheria comprising more than 60% of its diversity. Among identified metatherian clades, it has been argued that Paucituberculata is represented by “Riolestes capricornicus”.
Leonardo M. Carneiro, Hugo Bampi, João P. P. Araújo, Marina B. Soares, Gustavo R. Oliveira   +4 more
wiley   +1 more source

La perspectiva del Antropoceno: Una mirada geológica al cambio climático

Mètode Science Studies Journal: Annual Review, 2022
La división del tiempo geológico más reciente está basada en eventos de carácter climático provocados por variaciones en la órbita y el eje de rotación de la Tierra a escala de miles de años.
Alejandro Cearreta
doaj   +1 more source

Redescription of †Eobrasilia coutoi (Metatheria: Polydolopimorphia), a unique sclerocarpophagous metatherian from the Palaeogene of South America: Systematic affinities, and paleoecological and evolutionary implications

The Anatomical Record, EarlyView.
Abstract The ‘Palaeogene strata’ of the Itaboraí Basin (upper Paleocene‐lower Eocene), Southeastern Brazil, has preserved 29 genera and almost 50 species of metatherians (about 65% of its mammalian diversity). Among them, Eobrasilia coutoi Simpson, 1947 is the most enigmatic due to its quite fragmentary nature.
Leonardo M. Carneiro, Hugo Bampi, Ana C. Bernardes‐Dias, Lidiane Asevedo, João P. P. Araújo, Matheus R. Arêas, Alessandra S. Machado, Ricardo T. Lopes, Rafael C. Silva, Marina B. Soares, Gustavo R. Oliveira   +10 more
wiley   +1 more source

El Nevado de Famatina (Provincia de La Rioja). - Memoria de la Dirección General de Minas, Geología e Hidrología, año 1921 [PDF]

, 1923
Fil: Bodenbender, Guillermo. Ministerio de Agricultura. Dirección General de Minas, Geología e Hidrología; Argentina.Fil: Dirección General de Minas, Geología e Hidrología ...
Bodenbender, Guillermo, Argentina. Dirección General de Minas, Geología e Hidrología   +1 more
core   +1 more source

Heterogeneous Exhumation Mechanisms in Neoproterozoic Collisional Metamorphism: P–T Constraints From Pelotas and Punta del Este Terranes, Southern Brazil and Uruguay

Geological Journal, EarlyView.
Petrography, thermobarometry, and pseudosection modelling reveal peak metamorphic conditions of 3–7.5 kbar and 520°C–800°C in Tonian‐Cryogenian orthogneisses of the Dom Feliciano Belt. Metamorphic field gradients of 27°C/km–39°C/km and variable exhumation mechanisms support correlation of these units as remnants of a Himalayan‐type Piratini Orogeny ...
Thaiane Niederauer‐Santos, Carla Cristine Porcher, Daniel Triboli Vieira, Edinei Koester, Diego Jaldín, Karina Luengo, Luisa Caon   +6 more
wiley   +1 more source

Ichnology of the Rhätsandstein in the Exter Formation (Triassic), Germany

Geological Journal, EarlyView.
Trace fossils from the Rhätsandstein of southern Germany record repeated colonization of high‐energy shallow‐marine substrates before the Triassic–Jurassic transition. The assemblage reflects environmental and preservational controls on ichnodiversity.
Daniel Sedorko, James H. Nebelsick
wiley   +1 more source

Geología e Hidrogeología de Bahía Blanca y sus alrededores (provincia de Buenos Aires). [PDF]

, 1919
Fil: Dirección General de Minas, Geología e Hidrología; Argentina.Estudio petrográfico de rocas en territorio bonaerense. Estudios geológicos e hidrogeológicos de la región comprendida entre la boca del Río Negro, San Antonio y Choele-Choel. Contribución
Sobral, José María, Argentina. Dirección General de Minas, Geología e Hidrología, Pastore, Franco, Wichmann, Ricardo   +3 more
core   +1 more source

Dental enamel hypoplasia and intra‐tooth isotope records as indicators of physiological stress and environmental variability in Early Pleistocene hippopotamids from Melka Kunture (Upper Awash, Ethiopia)

Journal of Quaternary Science, EarlyView.
ABSTRACT Enamel hypoplasia results from temporary disruptions of enamel deposition during tooth development. It is widely used as an indicator of physiological stress in archeological and paleontological contexts; yet, its relationship with environmental conditions during tooth formation remains poorly constrained.
Giuseppe Briatico, Denis Geraads, Rita T. Melis, Margherita Mussi   +3 more
wiley   +1 more source

Geología de Bahía Culebra, Guanacaste, Costa Rica

Revista de Biología Tropical, 2012
La geología de Bahía Culebra, Guanacaste, Costa Rica, está compuesta por rocas volcánicas de corteza oceánica; sedimentos marinos depositados en el talud, la plataforma continental y zonas someras cerca de la costa; secuencias de rocas piroclásticas ...
Pablo Herrera Zúñiga, Ana Enid Vargas
doaj   +2 more sources

Darwin y el relleno de los valles andinos de Mendoza

Revista del Museo de La Plata, 2016
En 1835, aprovechando una escala en Valparaíso (Chile) del Beagle, Charles Darwin cruzó los Andes hacia Mendoza, travesía durante la cual realizó un gran número de observaciones geológicas.
José Francisco Mescua
doaj   +1 more source