BIO 385 — Invertebrate Zoology
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Invertebrate Diversity
Phylum Nemertea

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Phylum Nemertea — Ribbon Worms

Characteristics

  • Body usually very long, flattened
  • Unsegmented
  • Complete gut (separate mouth and anus)
  • Closed circulatory system
  • Retractable proboscis posterior to gut; housed in cavity: rhynchocoel (coelom)
  • Mostly marine, a few in fresh water or terrestrial
Many-lined Ribbon Worm
Many-lined Ribbon Worm, Baseodiscus delineatus; La Jolla, CA 		Slime Worm
Ribbon Worm, Oerstedia dorsalis; an atypically short species; La Jolla, CA 		Preserved Ribbonworm
Milky Ribbonworm, Cerebratulus lacteus, preserved specimen. Color varies with age and sex 		Nemertean C.S.
Unidentified Nemertean cross sections
See also labeled photo.
This page last updated 8 October 2020 by Udo M. Savalli ()
Images and text © Udo M. Savalli. All rights reserved.