Ediacaran fossils are generally interpreted as animals, but most show no evidence of a mouth, gut, or other organ systems. Which group of living animals best helps us to understand how Ediacaran organisms might have fed, exchanged gases, and reproduced?

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Placozoans are simple, flat, multicellular organisms that lack a mouth, gut, and other complex organ systems, similar to Ediacaran organisms. They absorb nutrients directly through their body surface, which may resemble how Ediacaran organisms functioned.

Ediacaran Fossils Are Generally Interpreted as Animals, but Most Show