For instance, just like flying insects, Thysanura have so-called dicondylic mandibles, while Archaeognatha have monocondylic mandibles.
2.
This species already possessed dicondylic mandibles, a feature associated with winged insects, suggesting that wings may already have evolved at this time.
3.
This species already possessed dicondylic mandibles ( two articulations in the mandible ), a feature associated with winged insects, suggesting that wings may already have evolved at this time.
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