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A butterfly was an insect that usually displayed vibrant colors and patterns on its wings.

Daniel Clayton collected butterflies and discovered a new species which he named after his wife Martha: Lepidoptera martha.

Behind the scenes

  • The concept of going back in time and stepping on a butterfly, thus altering all history, is a common one and its appearance in the episode "Clara's Folks" may have been a reference to this.

Appearances

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