Comb jelly belongs to the Phylum – Ctenophora, Jelly fish belongs to the Phylum – Cnidaria, Herdmania belongs to the Phylum – Chordata and Salpa belongs to the Phylum – Chordata. So, among all the given option, Ctenophora is a minor phylum. The Ctenophora are marine, free swimming organisms, which may be pelagic at times.

The phylum Ctenophora is a small phylum containing about 90 species of generally small and delicate animals known as Comb Jellies.