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Ephyra: Young, free-swimming medusa stage typically developing from attached scyphistoma or occasionally direct from a planula. Umbrella typically composed of eight, bifurcated arms (Stachowitsch, 1992).
- Stachowitsch, M., 1992. The invertebrates: an illustrated glossary. Chichester: John Wiley & Sons, Inc.
Definition specific to Scyphozoa