exuviae

/ɛɡˈzuːviˌiː/
noun
  1. The plural form of exuvia; the shed outer skins or shells of animals after molting.
    • Scientists study exuviae to learn about the growth stages of dragonflies.
    • The forest floor was littered with the exuviae of countless insects.
    • The collection of exuviae included shells from spiders, beetles, and crabs.
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