BIO 385 — Invertebrate Zoology
Go To: Udo Savalli | BIO 385 |

Invertebrate Diversity
Phylum Nemertea

(Click on any image for larger version)

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.