In ecology, extinction debt is the future extinction of species due to events in the past. The phrases dead clade walking and survival without recovery...

Cretaceous–Paleogene (K–Pg) extinction event, also known as the Cretaceous–Tertiary (K–T) extinction, was a sudden mass extinction of three-quarters of the...

Human extinction is the hypothetical end of the human species, either by population decline due to extraneous natural causes, such as an asteroid impact...

Extinction is the termination of a taxon by the death of its last member. A taxon may become functionally extinct before the death of its last member if...

though it still exists elsewhere. Local extinctions are contrasted with global extinctions. Local extinctions mark a change in the ecology of an area...

Holocene extinction, or Anthropocene extinction, is the ongoing extinction event caused by humans during the Holocene epoch. These extinctions span numerous...

Marine extinction intensity during Phanerozoic % Millions of years ago (H) K–Pg Tr–J P–Tr Cap Late D O–S The Triassic–Jurassic (Tr-J) extinction event...

the end-Ordovician mass extinction or the Ordovician-Silurian extinction, is the first of the "big five" major mass extinction events in Earth's history...

genetics Mutational meltdown Small population size Extinction vortex Extinction debt Extinctions in Near Time: Causes, Contexts, and Consequences 1999...

De-extinction (also known as resurrection biology, or species revivalism) is the process of generating an organism that either resembles or is an extinct...