Source: www.pinterest.com Extinction of taxa is difficult to confirm, as a long gap without a sighting is not definitive, but before 1995 a threshold of 50 years without a sighting was used to declare.
Source: www.pinterest.com The west african black rhinoceros (diceros bicornis longipes) was a subspecies of the black rhino that was declared extinct in 2011.
Source: www.pinterest.com While sometimes this is the natural progression of things, other times.
Source: www.pinterest.com Since then, roughly 80 mammal species have become extinct.
Source: www.pinterest.com Extinction of taxa is difficult to confirm, as a long gap without a sighting is not definitive, but before 1995 a threshold of 50 years without a sighting was used to declare.
Source: www.pinterest.com In 1985, new zealand ichthyologist jack garrick examined the specimen and categorized it as a new species.
Source: www.pinterest.com One would think that by now, humanity’s continued attacks on the unique animals.