Semaeostomeae
Sign in to saveSemaeostomeae (literally "flag mouths") is an order of large jellyfish characterized by four long, frilly oral arms flanking their quadrate mouths. The umbrella is domed with scalloped margins, and the gastrovascular system consists of four unbranched pouches radiating outwards from the central stomach; no ring canal is present. They usually possess eight tentacles; four are per-radical and four are inter-radical.
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- Discomedusae
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- Haeckel Discomedusae 28.jpg
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Semaeostomeae (literally "flag mouths") is an order of large jellyfish characterized by four long, frilly oral arms flanking their quadrate mouths. The umbrella is domed with scalloped margins, and the gastrovascular system consists of four unbranched pouches radiating outwards from the central stomach; no ring canal is present. They usually possess eight tentacles; four are per-radical and four are inter-radical.
==Taxonomy== The order consists of five families. Family Cyaneidae Family Drymonematidae Family Pelagiidae Family Phacellophoridae Family Ulmaridae File:Cyanea kils.jpg