from the GNU version of the Collaborative International Dictionary of English
- n.pl. One of the divisions of Crinoidea found fossil in paleozoic rocks; pentremites. They are so named on account of their budlike form.
from The Century Dictionary and Cyclopedia
- A group of fossil pelmatozoan echinoderms without arms, with ambulacra fringed on each side by pointed appendages in close relation with side-plates, which rest on or against a subambulacral lancet-plate pierced by a canal which lodges a water-vessel, and with hydrospires arranged in 10 or 8 groups limited to the radial and inter-radial plates.
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