Subclass Amphineura (Noun)
Meaning
A class of Gastropoda.
Classification
Nouns denoting animals.
Examples
- The subclass Amphineura is a smaller class within the larger class of Gastropoda that includes snails and slugs with certain distinct shell characteristics.
- This subclass includes several species of sea slugs that have somewhat more flexible shells than those found in other subclasses of Gastropoda.
- One specific order in the subclass Amphineura is the Monoplacophora, which was considered to have been extinct until a living species was discovered in the 1970s.
- Within the subclass Amphineura, certain families such as Neopilina have representatives that have a particularly long shell siphon that projects out from the body.
- The subclass Amphineura is not always used as a valid grouping within the class Gastropoda due to disagreements over the distinctiveness of the shell characteristics and body structures it defines.