Dinosaurs, the mystical and often fierce giants that once roamed planet Earth, seem to come alive in the minds of many a child. It was this imagination that led one young dino enthusiast to attempt to bring these paleo-beasts to life through his science-based illustrations. Leer más.

A new species of pterosaur, the flying reptiles that lived alongside the dinosaurs, has been discovered in Germany. It dates from the late Jurassic period, around 155 million years ago, making it one of the oldest pterosaurs known. Leer más.

Biodiversity monitoring programs need to be designed so that population changes can be detected reliably. This can be problematical for species that are cryptic and have imperfect detection. We used occupancy modeling and power analysis to optimize the survey design for reptile monitoring programs in the UK. Leer más.

La rana pirenaica (Rana pyrenaica) es una pequeña rana torrentícola conocida únicamente de algunos torrentes de alta montaña del Pirineo Central, desde Irati en Navarra hasta Ordesa en Huesca. Leer más.