Results 31 to 40 of about 1,120 (113)
The complex case of Macaronichnus trace fossil affecting rock porosity
Scientific Reports, 2021 Bioturbation is an important factor for reservoir quality due to the modification of host rock petrophysical properties (i.e., porosity, permeability, and connectivity). However, there is no predictable relationship between bioturbation and its effect on
Javier Dorador +2 more
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The Anatomical Record, EarlyView.The largest silesaurid known from South America is described here, demonstrating that silesaurids reached large body sizes in southwestern Gondwana. This discovery further underscores the widespread geographic distribution and temporal persistence of large silesaurids across Pangea, despite faunal turnovers and environmental events such as the Carnian ...
Rodrigo Temp Müller
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Testing the Dry Refuge Model: Paleoecological Insights From Late Pleistocene Gomphotheres in Ecuador
Ecology and Evolution, Volume 16, Issue 8, August 2026.We present paleontological evidence that may prove the Dry Refuge Model in Ecuador during the Late Pleistocene. ABSTRACT Paleoenvironmental records indicate that Neotropical regions near the Equator experienced reduced rainfall during the Last Glacial Maximum (LGM). However, some records show conflicting environmental signals.
Erwin González‐Guarda +9 more
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A Reserve of Light: Photography, Ethnography, and Lucid Memory in Contemporary Chile
The Journal of Latin American and Caribbean Anthropology, Volume 31, Issue 2, June 2026.ABSTRACT This article takes shape as a shared inquiry between an ethnographer and a photographer, in continuity with the photographic archive of Luis Poirot. Through sustained encounters with his images and archival practices, the text does not position itself outside the archive that motivates it, but unfolds from within it.
Cristóbal Bonelli, Luis Poirot
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Espacio, Tiempo y Forma. Serie I, Prehistoria y Arqueología, 2013 En este artículo describimos los micromamíferos de los lechos del yacimiento paleontológico de Kiputz IX correspondientes a una cronología arqueológica solutrense.
Naroa García Ibaibarriaga +3 more
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Sedimentology, Volume 73, Issue 4, Page 1148-1184, June 2026.ABSTRACT Microbial mats and microbialites are common in modern and ancient saline lacustrine environments and are highly responsive to biological and environmental factors. As such, they represent important sources of high‐resolution environmental data across a wide range of geological time. Nonetheless, interpretation of fossil mats is non‐trivial due
Connor Doyle +6 more
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Unusual occurrence of Cochlichnus in aeolian sandstones: evidence for a stiletto fly larval origin
Papers in Palaeontology, Volume 12, Issue 3, May/June 2026.Abstract Cochlichnus anguineus is an ichnotaxon recognized for its distinctive regular wavy morphology. It is a characteristic trace fossil typically associated with aquatic and marginal aquatic environments. However, in this study we examine its unusual occurrence in the aeolian sandstones of the Botucatu Formation (Lower Cretaceous, Paraná Basin ...
Bernardo de C. P. e M. Peixoto +8 more
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Scientia 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
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Geochemistry, Geophysics, Geosystems, Volume 27, Issue 5, May 2026.Abstract Planktonic foraminifera are instrumental in reconstructing paleoceanographic and paleoclimatic conditions. However, preferential dissolution can significantly bias both assemblages and chemical analyses, leading to biased interpretations. Bioerosional drill holes are commonly found in foraminiferal tests; however, it remains unknown if these ...
Cristiane Fraga Frozza +5 more
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Estudios 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
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