Stubborn does not come close to describing the desert tortoise, a species that did its evolving more than 220 million years ago and has since remained resolutely prehistoric. Leer más.
The 2010 IUCN Red List of Threatened Species contained assessments for almost 60,000 species, of which about 28,000 had spatial data. This spatial data collection provided below is for most of the comprehensivley assessed taxonomic groups such as amphibians, mammals, threatened birds, reef-building corals, groupers, wrasses, angelfish, butterflyfish, seasnakes, seagrasses and mangroves. Spatial data is also provided for many of the reptile species that have been assessed. Other groups will be added to this collection once they are mapped. Leer más.
El 1 de marzo de 2012 fotografié esta Rana ágil (Rana dalmatina) en la charca de Bigandi, cerca del pueblo de Uzkiano, pero dentro del municipio de Amurrio (Araba), la charca de cría más importante de la población del Alto Nervión de esta especie de rana parda, incluida en la categoría «Vulnerable» del Catálogo Vasco de Especies Amenazadas. La fotografía superior está tomada a la sombra, con luz natural y sin trípode y la inferior con flash. Leer más.
The famous feathered dinosaur archaeopteryx seems to have had a penchant for fossilizing in painful positions, with its head cranked backward at a severe angle. The contorted posture is so common in dinosaur fossils that it has its own name: opisthotonus, from the Greek “tonos,” meaning tightening, and “opistho,” behind. Leer más.
Snakes Evolve Along Similar Path Of Poison Resistance Say Biologists. Leer más.
