Also found in: Thesaurus, Medical, Encyclopedia, Wikipedia.


n. pl.1.(Zool.) A division of alcyonoid corals, including the seapens and related kinds. They are able to move about by means of the hollow muscular peduncle, which also serves to support them upright in the mud. See Pennatula, and Illust. under Alcyonaria.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
Mentioned in ?
References in periodicals archive ?
2016), were dominated by Porifera (sponges), Holothuroidea (sea cucumbers) and Pennatulacea (sea pens).
Phylum Species Annelids Neanthes kerguelensis Aphroditidea sp Serula narconensis Lumbrineridea sp Oligochaetes Chaetognaths Chaetognathe sp Crustaceans Euphausiids Decapods sp Copepods Coryceaus Cumacea sp Larvae of crustaceans Arthropods Serilis sp Pedunculata sp Natatolana sp Tanaids Tanaidacea sp Apseudomorpha sp Gastropod mollusks Cerithiopsidea sp Buccinidea sp Turridea sp Cancellariidea sp Nassariidae sp Epitoniidea sp Gasteropodea sp Enixotiophan sp Epoitonidea sp Fissurellidea sp Bivalve mollusks Crassatellidea sp Nuculana sp Bivalvia sp Crasostrea gasar Kidderia sp Euciroa sp Opistotranchia sp Cyaniidae sp Galeommatidea sp Limopsidea sp Cardiidea Gouldiopa sp Nematodes Priapulidea sp Sipunculidea sp Pennatulacea sp Platyhelminthes sp Broken eggs Fish?
Pandalus platyceros (Brandt, 1851), unidentified "thin" Pennatulacea, Apostichopus californicus (Stimpson, 1857), Luidia spp., and Octopus rubescens (Berry, 1953) were also found at relatively high densities [8].