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Pterygota
Winged
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Pterygota is a subclass of insects that includes the winged insects. It also includes insect orders that are secondarily wingless (that is, insect groups whose ancestors once had wings but that have lost them as a result of subsequent evolution).

The pterygotan group comprises almost all insects. The hexapod orders not included are the Microcoryphia (jumping bristletails) and the Thysanura (silverfishes and firebrats), two primitively wingless insect orders. Also not included are the three orders that are no longer considered to be insects: Protura, Collembola, and Diplura.

Pterygota :
Paleoptera
Neoptera - New Wings

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Pterygota
Winged
Dicondylia
Pre-Winged Insects
Insecta
Insects
Hexapoda
Six Legs
Arthropoda
Jointed Feet
Ecdysozoa
Molting
Protostomia
Mouth First
Bilateria
Two-Way Symmetry
Eumetazoa
True Higher Animals
Animalia
Animals
Eukaryota
Eukaryota
Cells with a Nucleus

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