Sipunculans (peanut worms) form a small phylum (Sipuncula) of non-segmented marine worms. From Wordnik.com. [Archive 2006-02-01] Reference
Of the phyla you haven't seen alive, I have seen: Chaetognatha, Nematomorpha, Nemertea, Sipuncula, Echiura which is really a subgroup of Annelida, Phoronida and Brachiopoda. From Wordnik.com. [So many phyla so little time] Reference
Hemichordata, Nematomorpha, Nemertea, Onychophora, Priapulida, Sipuncula, Echiura, Phoronida. From Wordnik.com. [SNAIL'S TALES] Reference
Instead, I will list a compilation of some of the phyla of which I have yet to see a live member: Acanthocephala, Chaetognatha, Gnathostomulida, Hemichordata, Nematomorpha, Nemertea, Onychophora, Priapulida, Sipuncula, Echiura, Phoronida, Loricifera, Pogonophora, Brachiopoda, Placozoa and so on. From Wordnik.com. [So many phyla so little time] Reference
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