Results 21 to 30 of about 44,081 (220)

Amphibians and reptiles of the Transvolcanic Belt biogeographic province of Mexico: diversity, similarities, and conservation [PDF]

Nature Conservation
The Transvolcanic Belt (TVB) of Mexico is a biogeographic province of significant biodiversity, acting as a transition zone between eastern and western Mexico.
Julio A. Lemos-Espinal, Geoffrey R. Smith   +1 more
doaj   +3 more sources

Meliosma mexicana (Sabiaceae), una especie nueva de la Sierra Madre Oriental de México [PDF]

, 2007
Se describe como especie nueva a Meliosma mexicana (Sabiaceae). Es endémica de la Sierra Madre Oriental de México en los estados de Querétaro y Tamaulipas.
Victor W. Steinmann
core   +3 more sources

Seis novedades de Leguminosae-Papilionoideae de México

Acta Botanica Mexicana, 2015
Se describen como nuevos y se ilustran los siguientes taxa: Astragalus guanajuatensis, relacionado con A. purpusii; Dalea emmae, también de Guanajuato y perteneciente a la sección Cylipogon; D.
Jerzy Rzedowski, Graciela Calderón de Rzedowski   +1 more
doaj   +1 more source

New geographic distribution records of Liometopum apiculatum Mayr, 1870 (Hymenoptera, Formicidae) in central northern Mexico [PDF]

Check List
The geographic distribution of Liometopum apiculatum Mayr, 1870 is expanded and updated, based on specimens collected in the regions of the Mexican Plateau, Sierra Madre Oriental, and Sierra Madre Occidental.
Mauricio Berumen-Jiménez, Elizabeth A. Martínez-Salazar, Luis A. Tarango-Arámbula, Rogelio Rosas-Valdez   +3 more
doaj   +3 more sources

Pliocercus bicolor [PDF]

, 2001
Number of Pages: 4Integrative BiologyGeological ...
Chiszar, David, Smith, Hobart M.
core   +1 more source

Registros notables de reptiles para Guanajuato, México

Revista Mexicana de Biodiversidad, 2010
Se presentan 5 nuevos registros de reptiles para el estado de Guanajuato; Lampropeltis triangulum dixoni, Leptodeira annulata cusiliris, Oxybelis aeneus, Tropidodipsas sartorii y Scincella silvicola caudaequinae.
José Ismael Campos-Rodríguez, Berenice Pérez-Valera, Leonor E. Evaristo-Aguilar, Cynthia Elizalde- Arellano, Juan Carlos López-Vidal, Raúl Hernández-Arciga   +5 more
doaj   +1 more source

High-precision U-Pb ages in the early Tithonian to early Berriasian and implications for the numerical age of the Jurassic-Cretaceous boundary [PDF]

, 2019
The numerical age of the Jurassic-Cretaceous boundary has been controversial and difficult to determine. In this study, we present high-precision U-Pb geochronological data around the Jurassic-Cretaceous boundary in two distinct sections from different ...
Aguirre-Urreta, Maria Beatriz, Concheyro, Graciela, Lena, Luis, Lescano, Marina Aurora, López Martínez, Rafael, Naipauer, Maximiliano, Pimentel, Márcio, Ramos, Victor Alberto, Samankassou, Elias, Schaltegger, Urs, Vennari, Verónica Vanesa   +10 more
core   +1 more source

Orquídeas de Las Lomas-La Manzanilla, Sierra Madre Oriental, Puebla, México

Botanical Sciences, 2010
-
ROSIELA PÉREZ-BRAVO, GERARDO A. SALAZAR, EZEQUIEL MORA-GUZMÁN   +2 more
openaire   +4 more sources

Cluster analysis for validated climatology stations using precipitation in Mexico [PDF]

, 2012
Annual average of daily precipitation was used to group climatological stations into clusters using the k-means procedure and principal component analysis with varimax rotation.
Azpra-Romero, E., Bravo, J.L., Estrada, F., Gay, C., Zarraluqui-Such, V.   +4 more
core   +4 more sources

THE TADPOLE OF THE MEXICAN TREE FROG CHARADRAHYLA TAENIOPUS (ANURA: HYLIDAE)

Caldasia, 2015
The tadpole of Charadrahyla taeniopus is described. This tadpole is a typical stream-dweller with a long depressed body, oral disc completely surrounded by marginal papillae with numerous small submarginal papillae lateral to the mouth, and several rows ...
MOISES KAPLAN, PETER HEIMES
doaj   +1 more source