Cl. ASCIDIACEA (sea squirts):
sessile, solitary or colonial, filter feeders
Cl. LARVACEA (appendicularians):
pelagic; make amazing mucous houses to suspension feed, may make several houses per day
the likely sister group of all remaining urochordates
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Copyright © 2000 by A. Richard Palmer. All rights reserved.
(revised Mar. 31, 2000)