Definitions
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- proper noun A taxonomic
class within thesubphylum Vertebrata — the livingjawless fishes :lampreys andhagfishes ; thecyclostomes .
Etymologies
from Wiktionary, Creative Commons Attribution/Share-Alike License
From French cyclostome, from Ancient Greek κύκλος (kyklos, "circle") + στόμα (stoma, "mouth").
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Examples
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Rather "do the _Holocephala_, _Plagiostomata_, and _Cyclostomata_ appear to us to be lower developmental stages individually differentiated, so that the other fully differentiated Vertebrates cannot easily be referred directly to their type" (p. 152, 1838).
Form and Function A Contribution to the History of Animal Morphology
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