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Webster 1913 Edition

‖

Noun.

pl.

[NL., fr. Gr.

βλαστόσ

sprout +

-oid

(Zool.)

One of the divisions of Crinoidea found fossil in paleozoic rocks; pentremites. They are so named on account of their budlike form.

Blastoidea

A taxonomic class within the phylum Echinodermata – blastoids or sea buds, an extinct type of stemmed echinoderm, resembling hickory nuts.