pogonophoran
noun
po·go·noph·o·ran ˌpō-gə-ˈnä-fə-rən 
: any of a phylum (Pogonophora) of marine wormlike animals of uncertain systematic relationships that live in chitinous tubes on the floor of deep seas, have obscure segmentation, and lack a mouth and digestive tract
pogonophoran adjective
Word History
Etymology
New Latin Pogonophora, from Greek pōgōnophora, neuter plural of pōgōnophoros wearing a beard, from pōgōn beard + -phoros -phore
First Known Use
1963, in the meaning defined above