K2 extinction event description.

[zygote]

65 million years ago a massive rock is a threat.
It tears through the atmosphere in a sec,
ready to slam into the earth with a catastrophic effect.
As it approaches the sky changes its light gradient,
from a normal day - to a bright radiance,
the impact incinerates everything within a mile radius.
It all ignites simultaneous, acid rain and forest fires rage,
offshore colliding plates cause seismic quakes and tidal waves.
Dust clouds blocked out all ultraviolet rays.
As the sunlight fades even the brightest day becomes a lighter grey.
Climate change into a cold and icy age,
plants couldn’t photosynthesize without energy at the vital phase.
Much less plant life remained,
with no plants to provide, supply, and sustain, food was scarce and life was strained.
Bigger megafauna like the brontosaurus died right away,
followed by the apex predators who couldn’t find their prey.
Survivors were microraptors, feathered dinosaurs still in a flightless stage,
small mammals living underground and inside of caves,
and crocodiles with their low metabolism could hibernate.
Mammals emerged strong where they had been weak.
Isolated populations meant that genetic variation increased, and species diversified filling evolutionary niche.
The age of reptile dominance had ceased from extinction the age of mammals was conceived.