The authors report on a newborn with an accessory malformed leg attached to the back. The limb was associated with a teratomatous mass adjacent to its attachment site. The embryology and nomenclature of this malformation is discussed briefly.

Two different conceptual models underlie the application of sequence stratigraphy by Exxon stratigraphers and later researchers. One, the global sea-level model (GSM), relates to presumed sea-level behaviour through time; the other, the sequence stratigraphic model (SSM), relates to the stratigraphic record produced during a single cycle of sea-level change. Though the two models are inter-rela...

We describe a new species of gundi (Rodentia: Ctenodactylidae: Ctenodactylinae), Sayimys negevensis, on the basis of cheek teeth from the Early Miocene of the Rotem Basin, southern Israel. The Rotem ctenodactylid differs from all known ctenodactylid species, including Sayimys intermedius, which was first described from the Middle Miocene of Saudi Arabia. Instead, it most resembles Sayimys baski...

Centro Nacional Patagónico, Casilla de Correo 128, Puerto Madryn, Chubut, Argentina (UFJP) Laboratorio de Evolución, Facultad de Ciencias, Universidad de la República, Igúa 4225, Montevideo, Uruguay (GD) División Biologı́a, Jardı́n Zoológico y Botánico de La Plata, Calles 52 y 118, 1900 La Plata, Buenos Aires, Argentina (SC) Laboratorio de Genética Evolutiva y Molecular, Facultad de Ciencias Exac...

OBJECTIVE Education in ambulatory settings is characterized by the conflicting agendas of clinical efficiency and educational effectiveness. In recognition of the challenge to teach more effectively, this review was undertaken to identify literature-based teaching methods for ambulatory-based education. DESIGN Literature search resources included electronic databases and relevant journal indi...

The rodent behavioural examination techniques are used to assess various psychological, neurological models and neurotoxicity studies. Therefore, it is of interest document the assessment methods in model study motor, sensory, cognitive functions emotional behaviour.