existential
extinctic
extinctionist
extinctual
extinctor
extinction level event
extinction event
extinctness
die out
end-Triassic mass extinction
imperiled
die off
semiextinction
sunk
undone
done for
ruined
washed-up
quenching
endangered
omnicide
extinct
nonextinction
extinctively
extinguish
end-Cretaceous
didine
semiextinct
Moros
extinction
insectageddon
threatened species
existential risk
apocalyptical
End-Permian Extinction
expiration
sleeping language
go out
apocalyptic
annihilistic
extinguishment
apocalyptism
do for
crash
coextinction
doomsday
pralaya
stabilomorphism
morbid
ghoulish
paleoethology
big five
time stand still
Permian-Triassic mass extinction
Great Dying
mylodontid
infinite
unextinct
annihilatory
peri-apocalyptic
kill off
conservation biology
wall
annihilationist
endangered species
deathlessness
extirpated
undeadly
paleoanthropological
omniversal
end of the world
eco-apocalypse
deadly
ecopoiesis
miners' canary
transience
extinctionism
neontology
disastrous
miner's canary
catastatic
deadliness
phenocide
age of extinction
exozoology
extirpate
palaeoecology
flame out
de-extinctioned
Big Brake
thing of the past
die
planetcide
stfnal
athanasy