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3 phyla
Porifera (Sponges), Cnideria (Jellies, corals, anemones), Cterophores (Comb Jellies). Synapomorphy: Multicellular
Porifera
Sponges. lack symmetry . No true tissue (organs, muscles) , lack nervous system. Earliest forms in the fossil record
Cniderians
Jellies, Corals, Anemones. Radial Symmetry, Synapomorphy among Cnidarians is the possession of Cnidae 2 morphologies
Ctenophores
Feed on jellies diploblastic 2 tentacles Predatory
Morphology of Cnidarians
Polyp, Medusa
4 Classes of Cnidarians
Scyphozoa –Jellies (Cup Animals) Hydrozoa –Hydras (Water Animals_ Anthozoa - anemones, corals and sea pens (Flower Animals) Cubozoa –Sea wasps and box jellies (Cube Animals)
Class Scyphozoa
The Jellies (part of the phylum Cnidaria) Medusa morphology for most of life
Class Hydrozoa
Hydras, Portugese Man-War (part of phylum Cnideria) Collection of polyps
Class Anthozoa
Corals, Anemones, Sea Pens (Part of Phylum Cnideria)
Class Cuboza
Sea Wasps and box jellies (Part of phylum Cnideria) Possess well developed cornea, lens, retina
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