An extinct species is one in which there are no living individuals.
 
 
Recommended Resources
AZE is a global initiative, comprised of biodiversity conservation organizations, which hopes to prevent extinctions by identifying and safeguarding key sites where species are in danger of disappearing, eliminating threats and restoring necessary habitats.
http://www.zeroextinction.org/
This site was developed to present, in three-dimensional form, the extinct species of the Mascarene Islands of the Indian Ocean, with the intent of drawing attention to the tragedy of extinction and to encourage a deeper understanding of the need for conservation. The featured species include the broad-billed parrot, dodo, giant skink, lesser Mascarene fruit bat, mauritius blue pigeon, mauritius scops owl, red rail, Rodrigues giant gecko, and the Rodrigues carinate snail.
http://www.extinct-species.com/
This is an independent, international online discussion forum, where anyone is free to register and join to discuss or debate any topic relating to extinction, with posts being in the English language. A wide variety of extinction topics are ongoing, while others can be created as needed.
http://extinctanimals.proboards.com/