To use this pictorial key, compare the characteristics of your animal to those in the picture. A description of characteristics is provided below each image. Selecting the highlighted words will link you to the glossary. Select the image that best matches your animal. This will take you to the next page in the key until you reach the genus identification for your specimen. Go to the Taxonomy page for more information about classification of tardigrades.

Phylum Tardigrada
	Click here to link to more detailed illustrations of tardigrades.
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Tardigrades are microscopic (0.1-1 mm in length) invertebrates that have 4 pairs of legs and look superficially segmented.