1) An order of amphineura 2) Animal order 3) Aplacophora 4) Order aplacophora 5) Order solenogastres 1) Aplacophora 
The Solenogastres (less often referred to as Neomeniomorpha), common name the solenogasters, are one subclass of worm-like, small, shell-less molluscs (Aplacophora), the other subclass being the Caudofoveata (Chaetodermomorpha). Some recent literature, and recent molecular evidence, indicates that the Aplacophora may be polyphyletic, and therefore...
[n] - an order of Amphineura
order Solenogastres noun an order of Amphineura