from The Century Dictionary.
- A prime division of brachiopods, including those which have a hinged calcareous shell: opposed to Ecardines: same as
from the GNU version of the Collaborative International Dictionary of English.
- noun plural (Zoöl.) A division of brachiopods including those which have a calcareous shell furnished with a hinge and hinge teeth. Terebratula and Spirifer are examples.
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