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Extinction

In biology and ecology, extinction is the end of an organism or of a group of organisms (taxon), normally a species. The moment of extinction is generally considered to be the death of the last individual of the species, although the capacity to breed and recover may have been lost before this point. Because a species' potential range may be very large, determining this moment is difficult, and is usually done retrospectively. This difficulty leads to phenomena such as Lazarus taxa, where a species presumed extinct abruptly "reappears" (typically in the fossil record) after a period of apparent absence.

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Pinnochio Lizard

This ain't no lie: The Pinocchio lizard was thought to be extinct for 50 years, but has been rediscovered in the cloud forests of Ecuador. After searching for the long-nosed animal for three years, a team of photographers and researchers found the lizard recently in a stretch of pristine cloud forest in the northwest part of the country, said Alejandro Arteaga, a co-founder of the educational and ecotourism company Tropical Herping, which conducted the search for the lizard. www.livescience.com

Contributed by Laura Diana Escamilla

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