All other prey items were considered accessory by both classification systems, with the exception of Annelida and unidentified materials, which were considered secondary by the QI.
During the winter, the importance of Annelida (namely Polychaeta) for the diet of adults was noticeable (%IRI=17.
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.
Species collected were primarily Phylum Annelida
, Class Polychaeta.
Annelida Polychaeta Scolecida Family Maldanidae Axiothella rubrocincta (Johnson, 1901): 10 **, 20.
The Annelida Polychaeta of the Albatross Tropical Pacific Expedition, 1891-1905.
5-24 cm FL (n = 11) Taxon and prey item M F IRI Annelida
Polychaeta Crustacea 27.
Phylum Annelida Class Polychaeta Order Amphinomida Family Amphinomidae Chloeia viridis Schmarda 1861 Ornate fireworm (Fig.
N Annelida Chloeia viridis N Arthropoda Dromidia larraburei Hemisqulla ensigera P Stenorhynchus debilis N Mollusca Chromodoris galexorum N Pleurobranchus areolatus N Polycera alabe N Pteria sterna P Echinodermata Arbacia incisa N Centrostephanus coronatus P Holothuria impatiens N California Channel Island Phylum Species SCL SBA SNI Cnidaria Bunodeopsis sp.
To determine whether different patterns can be obtained using different major taxonomic groups independently, this index was calculated for all taxa combined, and for Crustacea, Annelida, and Mollusca, as suggested by Ellingsen et al.
25 ** Annelida ns ns ns ns Mollusca * ns ns ns Spionidae *** *** P > 0.
Arthropoda (11 species) and Mollusca (8 species) were the 2 dominant phyla observed in this study, with regard to richness, and were followed distantly by Annelida
(4 species), Chordata (3 species), Cnidaria (2 species), Bryozoa (2 species), and Porifera (1 species), respectively (Table 1).