Dinosaur's are extinct now from the 2000 B.C.
This is the fossil of an extinct animal.
the polar bear will be extinct soonDinosaurs that once roamed the earth are now extinct.
Plantae compromises all living or extinct plants.
Dinosaurs are currently extinct, and if we keep killing endangered animals, all those animals will be extinct.
A lynx is very rare these days, it's probably going to be extinct soon.
a mamoth is extinct
you could put dinosaurs are an extinction.
"This lovely gazelle was officially declared extinct in the wild in 1968."
Why did the dinosaurs go extinct? Humans will never go extinct!
I would use it correctly in a sentence, of course. Thank you for asking.
Jarry use paroxysm in a sentence.\
I would use the word "theory" in a sentence like this: "The scientist presented a new theory to explain the findings of the experiment."