Graptoloidea

Graptoloidea

[‚grap·tə′lȯid·ē·ə]
(paleontology)
An order of extinct animals in the class Graptolithina including branched, planktonic forms described from black shales.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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