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Note that Mya is million years ago. For example, "48.6~40.4 Mya" shows a range between 48.6 and 40.4 million years ago. The time range and the epoch are shown in the Geological Time Table.
Phylogenetic Tree of Cnidarians
- Kingdom Animalia
- Phylum Cnidaria
- Class Anthozoa (Corals, Sea anemones; 590 Mya~)
- Subclass Hexacorallia
- Order Tabulata (488~251.4 Mya)
- Order Rugosa (Horn corals; 488~251.4 Mya)
- Order Ceriantharia (Tube-dwelling anemone)
- Order Actiniaria (Sea anemone; 590 Mya~)
- Order Antipatharia (Black coral) Coral
- Order Corallimorpharia
- Order Scleractinia (Stony corals; 265 Mya~) Coral
- Order Zoantharia
- Subclass Octocorallia
- Order Alcyonacea (Soft corals)
- Order Helioporacea (Blue coral; 161.2 Mya~) Coral
- Order Pennatulacea (Sea pen)
- Class Medusae (590~501 Mya)
- Class Cubozoa (Box jellyfish, Sea wasps)
- Order Carybdeida Jellyfish
- Class Hydrozoa (Hydroids, Hydra-like animals; 590 Mya~)
- Subclass Leptolinae
- Order Anthomedusae Jellyfish Coral
- Order Leptomedusae Jellyfish
- Order Siphonophorae Jellyfish
- Subclass Trachylinae
- Order Actinulidae Jellyfish
- Order Limnomedusae Jellyfish
- Order Narcomedusae Jellyfish
- Order Trachymedusae Jellyfish
- Class Scyphozoa (590 Mya~)
- Order Conulariida (460.5~199.6 Mya) Jellyfish
- Order Coronatae Jellyfish
- Order Semaeostomeae Jellyfish
- Order Rhizostomeae Jellyfish
- Class Staurozoa (Stalked jellyfish)
- Order Stauromedusae Jellyfish
- Class Myxozoa (Parasites)
- Class Polypodiozoa (Parasites)
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