thumb|Fossilized stranded scyphozoans on a Cambrian tidal flat at Blackberry Hill, Wisconsin. The Scyphozoa are an exclusively marine class of the phylum Cnidaria, referred to as the true jellyfish (or "true jellies").
The Scyphozoa are a group of marine animals commonly known as true jellyfish, belonging to the same phylum as sea anemones and corals. They are important members of ocean ecosystems and have existed since ancient times, with fossils showing they lived millions of years ago during the Cambrian period.
AI-generated from the Wikipedia summary — may contain errors.
thumb|Fossilized stranded scyphozoans on a Cambrian tidal flat at Blackberry Hill, Wisconsin. The Scyphozoa are an exclusively marine class of the phylum Cnidaria, referred to as the true jellyfish (or "true jellies").
The class name Scyphozoa comes from the Greek word skyphos (), denoting a kind of drinking cup and alluding to the cup shape of the organism.
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