It is too late

In a rich wetland redolent of spring,
deep in the reeds, their spikes lit by the sun
some actual Tyrannosaurus Rex enjoy an early run
corseted in their folds, armoured in scales,
their claws securely anchored they reach out
in unison. Their chatter is about
the weather, one is scanning clouds,
the other chirps about the tales
of climate change, one just enjoys the fun
of meeting in a warm and spring-clean world.
No harm can penetrate this safe stockade,
were it not for a sudden roar unfurled
that grows alarmingly like a cascade
of enemy invaders from the sky.
It is too late to even blink an eye
or say good bye to all the living chorus.
"Yucatan" cannot be found in a Thesaurus.