Definitions
from The Century Dictionary.
- noun A genus of irregular sea-urchins, of the family Cassidulidæ, or giving name to a family Echinoneidæ.
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bilby commented on the word echinoneus
Can anyone explain what irregular means in this context?
February 2, 2025
ry commented on the word echinoneus
The Century entry for irregular has a definition that is specific to echinoderms
February 7, 2025