Results 21 to 30 of about 2,219 (149)
Lower Cretaceous Dinosaur Tracks from Puebla, Mexico
Journal of Geological Research, Volume 2012, Issue 1, 2012., 2012 Dinosaur tracks have been identified near San Martín Atexcal, southern Puebla, Mexico, within the sedimentary sequence of the San Juan Raya Formation of Lower Cretaceous (Albian) age. The tracksite, located in the bed of the Magdalena River, reveals six different ichnofossiliferous levels identified within a 9 m thick sedimentary sequence. The inferred
Rubén A. Rodríguez-de la Rosa +4 more
wiley +1 more source
Investigaciones Geográficas, 1991 In the recent years, the influence of the landscape´s heterogeneity in the structure of plant communities has been recognized. In terms of geographic scales, the geomorphological dynamic is very important to explain the landscape structure in arid lands.
Felipe García Oliva
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Psyche: A Journal of Entomology, Volume 2012, Issue 1, 2012., 2012 Foraging strategies can be influenced by many factors such as abundance, availability, and toxicity of the resources. In arid zones, the distribution and productivity of plants also act as additional factors that affect foraging strategies. Twenty colonies of Pogonomyrmex barbatus ants were studied in an arid zone of central Mexico to evaluate the ...
Rafael Guzmán-Mendoza +3 more
wiley +1 more source
Revista Mexicana de Biodiversidad, 2013 A survey of psocopterans in the Zapotitlán Salinas Valley, Puebla, was conducted from October 1994 toOctober 1995. A total of 582 specimens were collected, representing 25 species, belonging to 15 genera and 8 families(18.38% of the species recorded in ...
José Arturo Casasola-González +2 more
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Revista Mexicana de Biodiversidad, 2008 LA ECOLOGÍA, MORFOLOGÍA Y LA FILOGENIA CONTRIBUYEN A LA ORGANIZACIÓN DE LOS ENSAMBLES DE LAGARTIJAS. SIN EMBARGO, SON POCOS LOS ESTUDIOS DETALLADOS SOBRE LA ORGANIZACIÓN DE ESTOS ENSAMBLES Y MÁS AÚN, CON ESPECIES SIMPÁTRIDAS.
JULIO A. LEMOS ESPINAL +2 more
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Spatial distribution of Tephrocactus aoracanthus (Lem.) Lem. in relation to shrubs in the hyperarid regions of west-central Argentina [PDF]
, 2013 The spatial intraspecific and interspecific distribution of Tephrocactus aoracanthus (Lem.) Lem. was studied using univariate and bivariate point pattern analysis, at landscape scale in four different physiographic units and at microscale in terms of the
Almiron, Martin Guillermo +1 more
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Nuevos registros de moscas de alas pintadas (Diptera: Ulidiidae) para Puebla, México
Acta Zoológica LilloanaSe reportan tres nuevos registros de distribución de la familia Ulidiidae para el estado de Puebla: Diacrita costalis Gerstaecker, 1860, Dyscrasis hendeli Aldrich, 1932 y Notogramma cimiciformis Loew, 1868.
David Ríos-López +3 more
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Un cacique y su tradición : el sur de Jalisco [PDF]
, 1977 Es éste un apunte histórico-antropológico sobre la formación del caciquismo mediante la exposición del caso concreto del sur de Jalisco en México. Roto el vínculo colonial impuesto por la Corona española, se pone en marcha en toda la estructura social ...
Muriá, José M.
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Mass movement processes and associated risks in Zacapoaxtla, Puebla
Investigaciones Geográficas, 2012 The mountainous relief of Mexico enhances naturally the occurrence of mass movement processes. However, hundreds of failures occurred in October 1999, as a result of an extreme precipitation event originated by a tropical storm.
Roberto Carlos Borja Baeza +1 more
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An annotated list of the centipedes (Chilopoda) in the National Collection of Arachnids, Instituto de Biología, Universidad Nacional Autónoma de México [PDF]
, 2010 The National Collection of Arachnids, Instituto de Biología, Universidad Nacional Autónoma de México (México City) houses 476 chilopod samples, of which 197 are determined to genus and/or species. These are documented here and represent several new state
Cupul-Magaña, Fabio Germán
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