Okay, that explanation makes a lot of sense. However, that would suggest a rather major change to Jellyfish is needed. In particular, Medusozoa should not be listed as a synonym for jellyfish in the lede. Instead, it should be explained that there is a jellyfish stage of the lifecycle of Medusozoa and that not all Medusozoa are jellyfish despite having this stage. —'''''' (talk/contrib/@)