Pourtalesiidae
Pourtalesiidae
[‚pȯrd·əl·ə′sī·ə‚dē] (invertebrate zoology)
A family of exocyclic Euechinoidea in the order Holasteroida, including those forms with a bottle-shaped test.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.