Talk:Saccorhytus

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Primitive?

"Saccorhytus coronarius is the most primitive known species of the superphylum deuterostomes"

Unclear to me what the sources mean by primitive. Would 'oldest known' be factually accurate? Looking at the Wikipedia page for primitive it expressly states that the word primitive cannot apply to a species; strengthening my impression that the phrase made no sense. ASA-IRULE (talk) 05:58, 31 January 2017 (UTC)[reply]