Both phorozooids and gonozooids, with three pairs of lateral epidermal, tentacle-like processes. Gill-septum S-shaped. Testis pear-shaped, directed forwards.
Kingdom Animalia Phylum Chordata Subphylum Urochordata Class Thaliacea Order Doliolida Suborder Doliolidina Family Doliolidae Genus Doliolina Species Doliolina sigmoides