retrochoanitic

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English

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Etymology

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(This etymology is missing or incomplete. Please add to it, or discuss it at the Etymology scriptorium.)

Adjective

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retrochoanitic (not comparable)

  1. (anatomy) That points backward.
    • 2016 January 14, “Paleobiology of the Latest Tithonian (Late Jurassic) Ammonite Salinites grossicostatum Inferred from Internal and External Shell Parameters”, in PLOS ONE[1], →DOI:
      The latter is retrochoanitic during the earliest ontogenetic stages (Fig 4A 2 ) and becomes prochoanitic (Fig 6B ) at D≈1.8 mm, after approximately 18 septa and in the first half of the second whorl (in CPC-1214).
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