Results 161 to 170 of about 1,651,917 (208)

Endemism and regionalization patterns of squamate reptiles in Amazonia. [PDF]

open access: yesNat Commun
Ribeiro-Júnior MA   +3 more
europepmc   +1 more source

Sporotrichosis in the Orinoco river basin of Venezuela and Colombia

Mycopathologia, 1989
Six cases of sporotrichosis from the Orinoco river basin of Venezuela and Colombia are described; two are of the localized cutaneous type and four are lymphocutaneous. Diagnosis was based on the patient's clinical history and mycological culture. Epidemiology and distinctive cultural habits of the patients are discussed in connection with disease ...
Luis Yarzabal
exaly   +3 more sources

The history of a continent from UPb ages of zircons from Orinoco River sand and SmNd isotopes in Orinoco basin river sediments

open access: yesChemical Geology, 1997
Abstract We report SHRIMP UPb ages of 49 zircons from a sand sample from the lower Orinoco River, Venezuela, and Nd model ages of the fine sediment load from the main river and tributaries. The UPb ages reflect individual magmatic or metamorphic events, the SmNd model ages reflect average crustal-residence ages of the sediment sources.
N T Arndt, S L Goldstein
exaly   +2 more sources

A new species of Tyttocharax (Characiformes: Characidae: Stevardiinae) from the Güejar river, Orinoco river Basin, Colombia [PDF]

open access: yesNeotropical Ichthyology, 2012
A new Tyttocharax species from the Güejar River system, near the Macarena Mountains in Colombia is described. This is the first record for the genus from the Orinoco basin. The combination of the following characters distinguish Tyttocharax metae from its congeners: presence of bony hooks on the pectoral and caudal-fin rays; bony hooks on the anal-fin ...
Carlos García-Alzate   +1 more
exaly   +6 more sources

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