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Silverfish / Firebrats

The name Zygentoma is derived from the Greek zygon (meaning “yoke” or “bridge”), and entoma (meaning “cut into”).  The idea behind the name was that the taxon represented an evolutionary link (hence “yoke or bridge”) between the Pterygota and the Apterygota (the two suborders within “entom” ology).  This view is now totally obsolete, but the name became firmly established in the late 19th and early 20th century — well before modern phylogenomic methods were developed.