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