Eleutherozoa is a subphylum of echinoderms. They are mobile animals with the mouth directed towards the substrate. They usually have a madreporite, tube...

question marks: The extant echinoderms consist of the Crinoidea and the Eleutherozoa, the latter of which is divided into the Asterozoa and the Echinozoa...

The Asterozoa are a subphylum in the phylum Echinodermata, within the Eleutherozoa. Characteristics include a star-shaped body and radially divergent axes...

            Infraphylum Blastozoa             Infraphylum Crinozoa           Subphylum Eleutherozoa             Infraphylum Asterozoa             Infraphylum Echinozoa       Infrakingdom...

Eleutherozoa Crinoidea...