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When an earthworm reaches reproductive age, its clitellum, also referred to as the genital collar, observably enlarges and becomes more glandular. Genital features in Megascolecidae, including male and female pores, papi...

A new species of the genus Plagiopholis is described based on a single specimen collected from Wenshan Prefecture, southeastern Yunnan Province, China. Compared with other species of the genus, it has a unique combinatio...

Los lagartos del género Liolaemus se distribuyen desde las altas cordilleras de Perú y Bolivia en el norte hasta el extremo austral de América del Sur. Se analizan los cariotipos descriptos para las 55 especies de Lio...

Antes de la captura de quien fuera el jefe de Estado iraquí Saddam Hussein, el 14 de diciembre de 2003, ya se había desencadenado un intenso debate acerca del foro más apropiado para juzgarlo. Los crímenes que le imp...

Ameghiniana was created 50 years ago. During this lapse, the late Cenozoic paleomastozoology developed exponentially in Argentina. Many of the papers dealed with systematics. However, fossil mammals were also used for es...

The Instituto de Economía y Finanzas de la Facultad de Ciencias Económicas (Universidad Nacional de Córdoba) intended to determine the Province participation in the begetting of nacional product. The representative ...

The systematics, and the geographic and stratigraphic distribution of the South American fossil taxa of Tremarctinae (Carnivora, Ursidae) are reviewed and discussed. New diagnostic characters are proposed, in order to su...