Noun
vestimentiferan (plural vestimentiferans)
(biology, archaic) Any benthic marine tube worm of the phylum Vestimentifera, now usually considered to be family Siboglinidae in phylum Annelida.
The Vestimentiferan tubeworms build the external chitin structure themselves by secreting chitin from specialized glands located in their body walls. Source: Internet
Like the trunk portion of the body, the roots of the Vestimentiferan tubeworms are composed of chitin crystallites, which support and protect the tubeworm from predation and environmental stresses. Source: Internet