this too shall pass

Iridium lies heavy on their eyes
who'd dominated the Cretaceous Age
selective pressures on who lives, who dies
reshuffled in one asteroid's brief blaze
for 90 million years, they'd had their run
diversified to niches of all sorts
but who copes best when dust blots out the sun
turned out to be the shrew's hirsute cohorts
the next extinction's wrought by our own hand
in pumping carbon out of fossil pools
to poison atmosphere, and sea, and land
a terraforming spell wielded by fools
who's next is in the laps of fickle gods
perchance intelligent cephalopods