Critically endangered

Bufo periglenes, the Golden Toad, was last recorded on May 15, 1989
IUCN Red List category abbreviations (version 3.1, 2001)
A critically endangered (CR) species is one which has been categorized by the International Union for Conservation of Nature (IUCN) as facing an extremely high risk of extinction in the wild.

As of 2014, there are 2464 animal and 2104 plant species with this assessment, compared with 1998 levels of 854 and 909, respectively.

As the IUCN Red List does not consider a species extinct until extensive, targeted surveys have been conducted, species which are possibly extinct are still listed as critically endangered. IUCN maintains a list of "possibly extinct" CR(PE) and "possibly extinct in the wild" CR(PEW) species, modelled on categories used by BirdLife International to categorize these taxa.

To be defined as critically endangered in the Red List, a species must meet any of the following criteria (A–E) ("3G/10Y" signifies three generations or ten years—whichever is longer—over a maximum of 100 years; "MI" signifies Mature Individuals):

This page was last edited on 6 February 2018, at 06:22.
Reference: under CC BY-SA license.

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