big five
extinctor
age of extinction
extinction level event
extinction event
end-Triassic mass extinction
K-T extinction event
semiextinct
extinctual
end-Cretaceous
endangered
mass extinction event
extinctic
Triassic-Jurassic extinction event
done for
washed-up
ruined
stabilomorphism
sunk
undone
die out
semiextinction
die off
existential
mylodontid
dinocerate
age
Archean eon
Archean aeon
Archeozoic
Archeozoic eon
Archaeozoic
Archaeozoic aeon
extinctness
Archean
stabilomorph
chronofauna
eco-apocalypse
sleeping language
extinctively
volutite
coextinction
expiration
imperiled
threatened species
apocalyptical
Permian-Triassic mass extinction
Pleistocene
Gomphotheriidae
postbounce