It would be surprising, under an evolutionary view, to find such a complex system in the earliest animal fossils.
Evolutionists are still failing to explain the Cambrian explosion. They struggle to explain new complexities or else try to change the subject.
None of the Cambrian animal phyla is represented in the Ediacaran fossil record.
The fossil record speaks clearly and cries out loud: the history of life on Earth is a history of saltations.
Scientists debate whether ctenophores are the earliest animals to appear in the Cambrian explosion. If so, they arrived with multiple tissues, a nervous system, and a digestive system.