Surf these sites: Arctic Wildlife -- Arctic Studies Center''s introduction to wildlife of the Arctic. Ascidian Home Page for the United States -- Home page for Ascidian News, a twice yearly newsletter published by Charles and Gretchen Lambert, with recent worldwide publication citations, meetings abstracts and work in progress. The Ascidiaceae are a family in the Phylum Urochordata and are commonly known as tunicates or sea squirts. Eel Migration -- Shows how big the Eels are when they migrate from the Saragossa sea to Europa and North America. Gnathostomata -- Philippe Janvier''s article about the jawed vertebrates in the Tree of Life website. Subphylum Vertebrata -- What makes a vertebrate a vertebrate? They have more in common than a backbone. Find out more in this site from the Animal Diversity Web.
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