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Leposternon microcephalum is a terrestrial amphisbaenid found in open and semi-open habitats in Bolivia, Paraguay, Argentina, Uruguay, and Brazil (Pérez and Ribeiro 2008. Check List 4:291–294). They are reported to be...

Introducción y objetivos: Lewinskya es un género incluido en la familia Orthotrichaceae. Se caracteriza por agrupar especies autoicas con estomas superficiales. A partir de especímenes recolectados en la provincia de ...

Introduction: In recent decades, Caribbean coral reefs have lost many vital marine species due to diseases. The well-documented mass mortality event of the long-spined black sea urchin Diadema antillarum in the early 198...

The fossils of the India Muerta Formation (Neogene, Tucumán Province, Northwestern Argentina) include several vertebrate groups, mainly metatherian, xenarthran, and notoungulate mammals. Nevertheless, these remains have...

Las briofitas son un grupo de plantas de unas 2400 especies distribuidas en todos losambientes excepto en el mar, dentro de ellas las hepáticas conforman el grupo másestudiado químicamente. El objetivo de este trabajo...

Most studies of ontogeny in anurans focus on the premetamorphic and adult stages, but very few have focused on the postmetamorphic and juvenile stages. Juvenile frogs share the same environment as adult frogs. They are e...