Meganeura monyi was a species of flying insect that lived
during the Carboniferous period, about 300 million years ago.
It is believed to be related to modern dragonflies,
and is the largest known flying insect species - it had
a wingspan of about 2½ feet (75 centimeters).
Meganeura was a carnivore and is believed to have fed
on other insects as well as small amphibians.
There has been a lot of debate about why it was
able to grew so large - one possibility is that
a higher partial pressure of oxygen in the atmosphere
made conditions more suitable to the evolution of
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