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Top: Science: Biology: Plants_and_Animals: Animalia: Chordata: Urochordata:

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Animal Diversity Web Subphylum Urochordata - Presents pictures of member species. With links to specimens and classifications.
Bartleby.com Tunicate - Discusses basic features of member species.
Biodidac Urochordata Asidiacea - Features a diagram of the larval stage of these species.
Book Rags.com Urochordata - Describes physical features and characteristics. With pictures and sources.
California Biota Home Page Subphylum Urochordata - Contains photos of representative species. With links.
Cell Migration Kinetics in the Stomach of Styela clava (Urochordata: Ascidiacea) - Contains an abstract of this article. From the Journal of Experimental Zoology.
Datasegment.com Definition: Urochordata - Gives references and links to related sites.
Elook.org Urochordata - Gives definition on tunicates with links.
Encyclopedia Guide Urochordata - Provides links and access to related sites.
Evolution of the Chordate Body Plan New Insights from Phylogenetic Analyses of Deuterostome Phyla Ur - Contains results and findings. With photos and phylogenetic tree.
Infoplease Subphylum Urochordata - Provides information on characteristics and classifications.
Information: Phyla Hemichordata and Chordata Subphylum Urochordata - Provides links to related sites.
Introduction Subphylum Urochordata - Describes physical features of member species.
Introduction to the Urochordata - Gives description of member species. With photos.
Just Blue Tunicate Taxonomy and Marine Invertebrate Research - Gives information on a study on the southern African inter and subtidal benthic hard substrate fauna. With photos.
Marine Animals at the MBL: SubphylumUrochordata - Contains a database of searchable species. With links.
Medical Dictionary: Urochordata - Offers information on member species. With links.
MJC Marine Bio Chordata, Subphylum Urochordata - Contains photos of colonial tunicates. With brief descriptions.
Nearctica Primitive Chordates Introduction to Urochordata - Lists online references.
One Look Urochordata - Provides links to online resources.
Organisms: Urochordata - Provides taxonomic information and heirarchical data. With related sources.
Subphylum Urochordata - Presents an overview and discusses the evolution of the brain. With photos.
Systematic Tree of Organisms: Urochordata - Contains a taxonomic diagram. With links.
Tight and Gap Junctions in the Intestinal Tract of Tunicates (Urochordata): A Freeze-Fracture Study. - Contains an abstract of this article. From the Journal of Cell Sciences.
Urochordata ( Tunicata) - Contains a taxonomic tree. With references.
Wildlife of Sydney Sea Squirts Urochordata - Discusses ascidians that inhabit the area. With descriptions and photos.
Word Reference.com Subphylum Urochordata - Presents a phylogenetic tree and references.

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