ground sloths and glyptodonts (both edentates) did colonise as far north as the USA and survived until the last few thousand years,but they are now extinct everywhere.
(ground sloths and glyptodonts; did colonise as far north; ) (they; are; T:now; extinct; L:everywhere)
ground sloths and glyptodonts they
did colonise as far north are
T:now extinct L:everywhere