Nemertea
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Nemertea is a phylum of animals also known as ribbon worms or proboscis worms, consisting of about 1300 known species. Most ribbon worms are very slim, usually only a few millimeters wide, although a
Nemertea by Joubin
Gorgonorhynchus repens, a species within class Anopla, discharges a sticky branched proboscis.
Stylet-containing part of proboscis of "armed" nemertean Amphiporus ochraceus.
Brain and neural cords of hoplonemertean Amphiporus ochraceus. Several clusters of dark eyespots and the opening of one cerebral organ are also visible.
Lophotrochozoa
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Lophotrochozoa is a clade of protostome animals within the Spiralia. The taxon was established as a monophyletic group based on molecular evidence. The clade includes animals like annelids, molluscs,
Nemertea
…and eversible proboscis. Traditional taxonomy says that nemerteans are closely related to flatworms, but both phyla are regarded as members of the Lophotrochozoa, a very large clade, sometimes viewed as a superphylum that also includes molluscs, annelids, brachiopods, bryozoa and many other protostomes. In 1555…
Caribbean reef squid