Remarkably, these animals can be placed within the crown group of the living cnidarian clade Medusozoa, which is not exactly what Darwinists should expect.
A few days ago, my kids and I visited the wonderful tropical aquarium and zoo Haus des Meeres (House of the Sea) in Vienna.
Forget all the pop science ballyhoo, and if you should not trust my word, just check the provided primary sources.
In other words: evolutionists make up fancy just-so stories that do not stand up to scrutiny when they are checked with actual empirical data.
Incidentally, a few days ago I received a message from my paleobiologist colleague Dr. Ken Towe, a retired senior scientist at the Smithsonian Institution.