History of the Universe eBook. 398 pages, 300 illustrations only £5.99
There are several different groups of animals which we call worms. Most of them are not closely related to each other. The main groups are:
Platyhelminths (flatworms)
Annelids (segmented worms)
Nemertea (ribbon worms)
Aschelminthes (roundworms, pinworms, eelworms, threadworms, hairworms, etc.)
Sipuncula (peanutworms)
Echiura (spoonworms)
Acanthocephala (spiny-headed worms)
Pogonophora (beardworms)
Chaetognatha (arrowworms)
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