aplacophora การใช้

The "'Heloplacidae "'are a group of plated aplacophora known from Silurian deposits.
The class is often combined with Solenogastres and termed Aplacophora, but some studies have cast doubt on the monophyly of this group.
"' Aplacophora "'is a monophyletic group of small, deep-water, exclusively benthic, marine valves.
In contrast to all other molluscan classes, the Aplacophora have no shell, and are instead covered by spicules ), which can be solid or hollow.
The "'Solenogastres "'( less often referred to as "'Neomeniomorpha "'), common name the solenogasters, are one subclass of small, worm-like, shell-less molluscs ( Aplacophora ), the other subclass being the Caudofoveata ( Chaetodermomorpha ).