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We need in future is donefurther research in the depth up 50 m and work about the animals that they feed on this polychaeta.
Polychaeta and Mollusca were also important in the diet of the southernmost populations.
Specimens from the pretrilobite Lower Cambrian of the Ukraine as well as from the trilobite-bearing Lower Cambrian of Nevada have been assigned tentatively to the phylum Annelida Lamark, 1809 and class Polychaeta Grube, 1850.
Polychaeta Magelonidae * 89 85 20 118 Capitellidae * 101 95 27 36 Cirratulidae * 17 10 22 93 Obiniidae * 31 41 74 60 Nereidae * 55 21 16 12 Glyceridae * 10 7 12 3 Goniadidae 8 7 7 Opheliidae 7 20 1 Lumbrineridae 1 2 2 Sabellidae 7 1 Nephytydae * 5 Spionidae * 3 Onuphidae * 1 Polynoidae * 1 Gastropoda Bulla gouldiana + 15 3 6 3 Haminoea vesicula * 8 2 3 1 Acteocina spp.
He found that polychaeta prey was the most commonly occurring prey group, however, gammarid amphipods were also quite common.
Crustacea (14 species) represented the most abundant phylum, followed by Mollusca (12 species) and Polychaeta (5 species).
Phylum Annelida Class Polychaeta Order Amphinomida Family Amphinomidae Chloeia viridis Schmarda 1861 Ornate fireworm (Fig.
For descriptive statistics, mean and SD were calculated for abundance and number of species, considering the entire community and the most abundant taxonomic groups separately (Amphipoda, Polychaeta, Gastropoda, and Bivalvia).