From Latin tardigradus (“slowly stepping”), from tardus (“slow”) + gradior (“step, walk”), named by Spallanzani in 1776.
"tardigrada." YourDictionary, n.d. Web. 07 December 2018. <https://www.yourdictionary.com/tardigrada>.
tardigrada. (n.d.). Retrieved December 07th, 2018, from https://www.yourdictionary.com/tardigrada
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