The Illinois Natural History Survey Annelida Collection is one of the largest state collections of freshwater oligochaetes in the USA, holding more than 300,000 specimens.
The segmented worms, including earthworms, polychaete worms, and leeches.
Photographs and links to other worm pages.
Annelid worms, brought to you by Biological Sciences at the University of Paisley.
Introduction to the Annelida, the segmented worms.
Anatomical illustrations of segmented worms from the University of California at Santa Cruz.
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