Extinct species

Visualization of narrower problems
Name(s): 
Species extinction
Failure to preserve species
Loss of species
Extirpation of species
Extirpating living beings
Nature

This page features lists of extinct species, organisms that have become extinct, either in the wild or completely disappeared from Earth.

In actual theoretical practice, a species not definitely located in the wild in the last fifty years of current time is textually called "extinct".

Source: Wikipedia

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(B) Basic universal problems