| Notospermus | |
|---|---|
 | |
| Notospermus geniculatus | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Nemertea |
| Class: | Anopla |
| Order: | Heteronemertea |
| Family: | Lineidae |
| Genus: | Notospermus Huschke, 1829 |
Notospermus is a genus of nemertine worms that includes marine species. Genus contains the following species: [1] [2]
Nemertea is a phylum of invertebrate animals also known as ribbon worms or proboscis worms. Alternative names for the phylum have included Nemertini, Nemertinea and Rhynchocoela. Most are very slim, usually only a few millimeters wide, although a few have relatively short but wide bodies. Many have patterns of yellow, orange, red and green coloration. The foregut, stomach and intestine run a little below the midline of the body, the anus is at the tip of the tail, and the mouth is under the front. A little above the gut is the rhynchocoel, a cavity which mostly runs above the midline and ends a little short of the rear of the body. All species have a proboscis which lies in the rhynchocoel when inactive but everts to emerge just above the mouth and capture the animal's prey with venom. A highly extensible muscle in the back of the rhynchocoel pulls the proboscis in when an attack ends. A few species with stubby bodies filter feed and have suckers at the front and back ends, with which they attach to a host.
Anopla has long been used as name for a class of marine worms of the phylum Nemertea, characterized by the absence of stylets on the proboscis, the mouth being below or behind the brain, and by having separate openings for the mouth and proboscis. The other long used class of Nemertea are the Enopla. Although Anopla is a paraphyletic grouping, it is used in almost all Scientific classifications. Anopla is divided into two orders: Palaeonemertea and Heteronemertea.
Palaeonemertea is an order of primitive nemertean worm. It may be para- or polyphyletic, consisting of three to five clades and totalling about 100 species.
Enopla is one of the classes of the worm phylum Nemertea, characterized by the presence of a peculiar armature of spines or plates in the proboscis.
Turbinellidae are a family of sea snails, marine gastropod mollusks in the clade Neogastropoda. Members of this family are predators.
Odostomia is the most speciose genus of minute sea snails, pyramidellid gastropod mollusks. This genus is placed in the family Pyramidellidae in the subfamily Odostomiinae. There are several hundred species in this diverse genus
The Brisingids are deep-sea-dwelling starfish in the order Brisingida.
Finella is a genus of sea snails, marine gastropod mollusks in the family Scaliolidae.
Capulus is a genus of small sea snails, marine gastropod mollusks in the family Capulidae, the cap snails.
Eatonina is a genus of minute sea snails, marine gastropod mollusks in the family Cingulopsidae.
Schilderia is a genus of sea snails, marine gastropod mollusks in the family Cypraeidae, the cowries.
Sinum is a genus of predatory sea snails, marine gastropod mollusks in the family Naticidae, the moon snails. Most naticids have shells that are globular, but the shell of species in the genus Sinum is flattened to some extent, some being so flattened that they are ear-shaped.
Perna is a genus of mussels, marine bivalve molluscs in the family Mytilidae.
Lineidae is a family of nemertean worms. It contains the following genera:
Kejdonia is a genus of sea snails, marine gastropod mollusks in the family Pyramidellidae, the pyrams and their allies.
Rissopsetia is a genus of sea snails, marine gastropod molluscs in the family Pyramidellidae.
Prostoma is a genus of freshwater nemerteans, containing the following species:
Parthenina indistincta is a species of sea snail, a marine gastropod mollusk in the family Pyramidellidae, the pyrams and their allies.
Malacobdellidae is a monogeneric family within the phylum Nemertea. It is included with the order Hoplonemertea within the class Enopla.
Hoplonemertea is an order of ribbon worms in the class Enopla. It contains two suborders:
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