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Phylogeny Echinoderms - Chordata

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3."Phorons" all marine, worm-like, U-shaped gut
7.Phylum Echinodermata, "Sea Cucumbers", greatly prolonged, 5 rows of tube feet, deposit feeders, internal madroporite
11.Phylum Echinodermata, "Starfish", oral surface faces down,
16.Subphylum Uniramia, segmented, uniramous appendages, terrestial and cryptics
19."Arrow Worms", planktonic, active predators, hermaphroditic
22.Phylum Chordata, Subphylum Urochordata, "Sea Squirts", sessile, colonial marine
23.Phylum Arthropoda, Subphylum Crustacea, Class Malacostraca, mostly marine, well developed abdomen, 8 segments
24.Phylum Hemichordata, primative, worm-like, live in deep water in Sounthern Hemisphere
1.Phylum Arthropoda, Subphylum Crustacea, "Krill", marine, filter feeders, highest number in Anartica
2.Phylum Echinodermata, "Sea Urchins", globular shapes, fused ossicles, spines for defense
3."Peanut Worms", all benthic marine, detritous feeders, no gass echange or circulatory system,similar to Annelids
4."Spiny-Skinned", 3 compartment coelom, pentamerous radial symmetry, internal skeleton, water vascular system
5.Phylum Bryozoa, non-polymorphic, all freshwater, U-shaped lophophore, gelatinous colony, most primative
6.Phylum Arthropoda, Subphylum Uniramia, "Millipedes", posses diplosegments and repugnantoral glands for defense
8.Phylum Hemichordata, "Acorn Worms", live in mud flats and are deposit feeders
9.Phylum Bryozoa, all marine species, circular lophophore, polymorhpic, chitonious zooecium
10."Lamp Shells", all marine, ancient group with 2 compartmental coelom
12.Phylum Brachiopoda, incomplete digestive tract, CaCO3 shell, Terebratella
13.Phylum Echinodermata, "Brittle Stars", most diverse, smaller than starfish, no ambulacral groove, bursal sacs
14.Phylum Brachiopoda, valves held by muscles, complete digestive tract, CaPO4 shells, Lingula
15."Velvet Worms", very ancient group, living fossils, mostly tropical areas, internal segmentation
17.Phylum Arthropoda, Subphylum Uniramia, "Centipedes", active predators, scretes poison with maxillpedes
18.Phylum Echinodermata, "Sea Lilies", oldest, most primative group, sessile and deep water, ossicles form stalk
20."Moss Animals", Colonial, sessiles, mostly marine, polymorphic zooids in colony, no circulatory, no excretory, no respiratory
21.Phylum Arthropoda, Subphylum Uniramia, 750,000 species, spiracles for respiration, flight

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