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Top 20 Directory:
Top : Science : Biology : Flora_and_Fauna : Animalia : Chordata : Urochordata
Sites:
  		• Archives of Tunicata E-mail List: Subscription information and archives.
  		• 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.
  		• Just Blue: South African organization conducting research on the ascidians or tunicates, commonly known as sea squirts, mostly for the Coral Reef Research Foundation. Website contains many photographs of tunicates.
  		• Urochordata: Introduction to the Urochordata, with photos.
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