The order Rhyzostomea includes organisms with mouths found along their arms, such as the Cassiopeia.
One group of species in this phylum became hermatypic during the Middle Triassic, and palytoxin was first isolated from a species in this phylum. The order Rhyzostomea includes organisms with mouths found along their arms, such as the Cassiopeia. Members of one class possess a tissue called the velarium which aids in locomotion, and the largest class in this phylum includes sea pansies and sea fans and is called Anthozoa. Members of this phylum possess a structure called the operculum, within which nematocysts are found, and members go through both polyp and medusa stages. For 10 points, name this phylum which includes anemones, hydras, and jellyfish.
One group of species in this phylum became hermatypic during the Middle Triassic, and palytoxin was first isolated from a species in this phylum.
Cnidarians