By Corollary 3.2, species 1 is extinct with zero exponential extinction rate and species 2 is exponentially extinct.
By Theorems 3.1, 3.2 and 4.1, species 1 is persistent in mean and species 2 is extinct with zero exponential extinction rate.
The Tasmanian Aboriginal people had already (wrongly) been declared extinct with the passing of Truganini in 1876.
The dynasty became extinct with the death, in 602, of an-Nuʿmān III, who was a Nestorian Christian.
In Asia they are nearly extinct, with the largest confirmed population (a few dozen) inhabiting northeastern Iran.
As recently as the late 1960s, viognier was virtually extinct, with only a handful of hectares left in Condrieu.
"If a virus affects only one rare species of animal and that animal becomes extinct, the virus becomes extinct with it," he said.
The legitimate male issue of the Plantagenet line became extinct with the execution in 1499 of Edward, earl of Warwick, grandson of Richard, duke of York.
As for "maximal", Mr. Prescott presumably thinks the group became extinct with the birth in 1868 of Gene Stratton Porter and Eleanor Porter, authors of "Girl of the Limberlost" and "Pollyanna".
Some of the relevant species are extinct, with no modern counterparts; the soils have changed under centuries of cultivation; the atmosphere, even the climate, is different now to what it was then.
The elegant five-foot-tall whooping crane nearly became extinct, with just one nonmigrating flock in Florida and one in southern Texas that migrates to northern Canada each year.
