This striking picture from the Tirimbina Rainforest Center in Costa Rica shows the giant parrot snake (Leptophis ahaetulla). Their average length is 5 feet, but they can exceed 7 feet! Leer más.

After five years of delay, the federal government today finally  proposed to more than 739 miles of critical habitat for threatened loggerhead sea turtles on their nesting beaches along the U.S. Atlantic and Gulf coasts. Leer más.

Pterosaurs have been known from the Cretaceous sediments of the Isle of Wight (southern England, United Kingdom) since 1870. We describe the three-dimensional pelvic girdle and associated vertebrae of a small near-adult pterodactyloid from the Atherfield Clay Formation (lower Aptian, Lower Cretaceous). Leer más.

A very large pterosaur (MN 6594-V) from the Romualdo Formation (Aptian/Albian), Santana Group, Araripe Basin, is described. The specimen is referred to Tropeognathus cf. T. mesembrinus mainly due to the presence of a low and blunt frontoparietal crest, the comparatively low number of teeth and the inclined dorsal part of the occipital region. Leer más.

Environmental context strongly affects many host-pathogen interactions, but the underlying causes of these effects at the individual level are usually poorly understood. The amphibian chytrid fungus has caused amphibian population declines and extinctions in many parts of the world. Leer más.