Nemertina

By Ray Gibson

Nemertines are typically defined as unsegmented, bilaterally symmetrical, acoelomate invertebrates. Worldwide more than 1100 species are currently recognised as valid. In the South Atlantic 11 species of pelagic nemertines have been recorded.

Contents
Ne. 1 Introduction
Ne. 2 Methods
Ne. 3 Geographic patterns
Ne. 4 Vertical profiles and hydrographic data
Ne. 5 Identification of pelagic nemertines
Ne. 6 Morphological and anatomical features
Ne. 7 Suggested reading

Identification
Go to Page 358: Nemertina in the key for identification to species level.

Species
See Phylum Nemertina, where a list of South Atlantic nemertinans can also be found.

The species of Nemertina are treated in the Species module from page Nectonemertes minima to Protopelagonemertes hubrechti.