ribbon worm
nemertean
nemertine
proboscis worm

Emplectonema neesii is a species of ribbon worm in the phylum Nemertea.

Like other ribbon worms, this species is not divided into segments but is long, thin and contractile.

The bootlace worm is in the phylum Nemertea or ribbon worms.

Amphiporus lactifloreus is a species of ribbon worm in the phylum Nemertea.

Like other ribbon worms, A. lactifloreus is not divided into segments but is smooth and contractile.

Other invertebrates include the Nemertea or ribbon worms, and the Sipuncula.

Prostoma jenningsi is a species of ribbon worm known only from one site near Croston, Lancashire.

Once the algae and seaweed were gone, so too went the hermit crabs, ribbon worms and eels.

Later scientists suggested an affinity with the nemerteans (ribbon worms), but the evidence for this was somewhat inadequate.

Collared cells are found in other animal groups, such as ribbon worms, suggesting this was the morphology of their last common ancestor.