Of tests, trochs, shells, and spicules: Development of the basal mollusk Wirenia argentea (Solenogastres) and its bearing on the evolution of trochozoan larval key features

Aplacophora

Aplacophora is a monophyletic group of small, deep-water, exclusively benthic, marine molluscs found in all oceans of the world.

Wirenia argentea

Wirenia argentea is a species of marine mollusc of solenogastres in the family Gymnomeniidae.

Solenogastres

The Solenogastres (less often referred to as Neomeniomorpha), common name the solenogasters, are one subclass of worm-like, small, shell-less molluscs (Aplacophora), the…