Results 41 to 50 of about 31,160 (163)

Icnitas de artiodactilos (Mammalia) del Paleogeno de Olcoz (Depresion del Ebro, Navarra)

open access: yesEstudios Geologicos, 1994
Se describe un conjunto de icnitas fósiles de mamíferos ubicado en los alrededores de la localidad navarra de Olcoz (Depresión del Ebro). Las huellas se localizan en niveles areniscosos de la «Formación de Mués», de posible edad Sueviense (Oligoceno ...
H. Astibia   +2 more
doaj   +1 more source

Role of Taphonomy in Biostratigraphic and Evolutionary Interpretations [PDF]

open access: yes, 1989
Depto. de Geodinámica, Estratigrafía y PaleontologíaFac.
Fernández López, Sixto Rafael
core  

Functional morphology and biomechanics of an ontogenetic series of the Triassic cynodont Brasilodon quadrangularis and bite performance in the sister taxon of Mammaliformes

open access: yesPalaeontology, Volume 68, Issue 5, September/October 2025.
Abstract The Upper Triassic Santa Maria Supersequence in Brazil has yielded numerous cynodont species, including derived probainognathians, which are relevant for understanding the cynodont–mammal transition. One of these cynodonts is Brasilodon quadrangularis, considered to be the sister taxon to Mammaliaformes due to a suite of apomorphic features in
Charles J. Salcido   +8 more
wiley   +1 more source

Marsh development and sea level changes in the Gernika Estuary (southern Bay of Biscay): foraminifers as tidal indicators

open access: yesScientia Marina, 2006
The ecological distribution of some species of Foraminifera living in estuaries can be used in the interpretation of former coastal lines. There is a close relationship between tide level and the distribution of particular benthic foraminifer species.
Ana Pascual, Julio Rodriguez-Lazaro
doaj   +1 more source

D. Joaquín Gómez de Llarena y Pou (1891-1979) [PDF]

open access: yes, 1980
Depto. de Geodinámica, Estratigrafía y PaleontologíaFac.
Perejón, Antonio   +2 more
core  

Las unidades litoestratigráficas del Pérmico y Triásico inferior y medio en el sector SE de la Cordillera Ibérica

open access: yesEstudios Geologicos, 1992
Se definen formalmente las unidades litoestratigráficas que constituyen el Pérmico y Triásico del SE de la Cordillera Ibérica representados en Facies Muschelkalk, Buntsandstein y Saxoniense. El rango definido para las unidades es de Formación, algunas de
J. López Gómez, A. Arche Miralles
doaj   +1 more source

Sobre la caracterización mineralógica de la bismutita de Oliva de la Frontera (Badajoz): Información [PDF]

open access: yes, 1992
Depto. de Geodinámica, Estratigrafía y PaleontologíaFac.
La Iglesia, Á.   +2 more
core  

Middle Pleistocene revelations: unravelling taphonomic processes in mammals including Mesotherium cristatum (Mesotheriidae, Notoungulata), Corralito Site, Córdoba Province, Argentina

open access: yesPalaeontology, Volume 68, Issue 4, July/August 2025.
Abstract Taphonomic studies of Cenozoic mammals are scarce. We report a study of the taphonomy of the Corralito site (Middle Pleistocene to Holocene), Córdoba Province, Argentina, which documents the last population of the South American native ungulate typotherid Mesotherium cristatum. We discovered two specimens of M.
Marcos Fernández‐Monescillo   +6 more
wiley   +1 more source

Detrital zircon typology and U/Pb geochronology for the Miocene Ladrilleros-Juanchaco sedimentary sequence, Equatorial Pacific (Colombia): New constraints on provenance and paleogeography in northwestern South America

open access: yesGeologica Acta, 2017
Typology and internal texture analyses were performed on detrital zircons obtained from the Miocene sandstones of the Ladrilleros-Juanchaco sedimentary sequence (Colombia, Equatorial Pacific).
E. OSORIO-GRANADA   +5 more
doaj  

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