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ECTOPROCTA THROUGH ECHIUROIDEA: 



TAXONOMIC SUMMARY. 



Kingdom Animalia (L. ammalis, animate) — animals 



Subkingdom Eumetazoa (Gr. eu-, true + meta, among + zoon, animal) — eumetazoans 



Grade Bilateria (L. bi-, two + lateralis, side) 



Eucoelomata (Gr. eu-, true + koilos, hollow) 



Lophophorata (Gr. lophos, the crest + phoros, bearing) 

 Phylum Ectoprocta (Gr. ectos, outside + proktos, anus) — ectoprocts or moss animals 

 Phylum Phoronida (Gr. /)Aoroy + wifl', nest) — horseshoe worms 

 Phylum Brachiopoda (Gr. brachwn, arm + podos, foot) — lamp shells 



Schizocoela (Gr. sckizo, cleave + koilos) 



Phylum Sipunculoidea (L. sipimculus, a little siphon + -oirfrai, form or type of) — 

 peanut worms 



Phylum MoUusca (L. molluscus, soft) — moUusks 

 Class Amphineura (Gr. amphi, both + neuron, nerve) — chitons or sea cradles 

 Class Scaphopoda (Gr. skapha, boat + podos, foot) — tusk shells 

 Class Gastropoda (Gr. ^arier, belly + podos) — univalves 

 Class Pelecypoda (Gr. /leMui, hatchet + podos) — bivalves 

 Class Cephalopoda (Gr. kephale, head + podos) — nautili, squids, and octopuses 



Phylum Echiuroidea (Gr. fr^Lf, serpent + oura, tail + -oideus) — innkeepers and allies 



Figure 13.1 Ectoprocta types: A, F/us/re//a, on erect, soft colony covered with horny spines; B, 

 Buguta, on erect, "moss" type; C, tic/ienoporo, o seo lichen, thin and encrusting; D, Phidolopora, sea 

 lace, an erect animal growing from a calcareous base; E, Aeta, a colonial animal with creeping and 

 partially adherent branches (individuals ore solitary within the expanded port of each flexible tube, 

 {x 15); F, fiugu/a, a section of a colony to show organization of individuals, x 25; G, Crisia, on encrust- 

 ing or erect moss of tubes, a segment of o colony, x 15. 



