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IV. The Domain Eukarya E. Fungi F. Animals 1. Overview:. IV. The Domain Eukarya E. Fungi F. Animals 1. Overview:. - Multicellular , heterotrophic eukaryotes that lack a cell wall - Choanoflagellate ancestry - Oldest animal fossils date to 650 mya.
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IV. The Domain Eukarya E. Fungi F. Animals 1. Overview:
IV. The Domain Eukarya E. Fungi F. Animals 1. Overview: - Multicellular , heterotrophic eukaryotes that lack a cell wall - Choanoflagellate ancestry - Oldest animal fossils date to 650 mya August 2010: Princeton geoscientist Adam Maloof describes possible sponge fossil dating to 650 mya, found in Australia.
IV. The Domain Eukarya E. Fungi F. Animals 1. Overview: - Multicellular , heterotrophic eukaryotes that lack a cell wall - Choanoflagellate ancestry - Oldest animal fossils date to 650 mya - Major radiation of phyla 550 mya – Cambrian ‘Explosion’ evolution of predatory Cnidarians selected for evolution of hard parts that fossilize more readily.
IV. The Domain Eukarya E. Fungi F. Animals 1. Overview: 32 Animal Phyla: 95% of species are ‘invertebrates’ (85% are Arthropods); most are marine
IV. The Domain Eukarya E. Fungi F. Animals 1. Overview: 32 Animal Phyla
IV. The Domain Eukarya E. Fungi F. Animals 1. Overview: 32 Animal Phyla
IV. The Domain Eukarya E. Fungi F. Animals 1. Overview: 32 Animal Phyla
IV. The Domain Eukarya E. Fungi F. Animals 1. Overview: 2. Development:
IV. The Domain Eukarya E. Fungi F. Animals 1. Overview: 2. Development: 3. Body Plans:
IV. The Domain Eukarya E. Fungi F. Animals 1. Overview: 2. Development: 3. Body Plans: 4. Phylogeny:
IV. The Domain Eukarya E. Fungi F. Animals 1. Overview: 2. Development: 3. Body Plans: 4. Phylogeny: 5. Major “Invertebrate” Phyla a. Porifera: Sponges Intracellular digestion Cellular ‘circulatory’ system Asymmetrical Cells loosely integrated
5. Major “Invertebrate” Phyla a. Porifera: Sponges b. Cnidaria: Corals, Hydra, Anemones, Jellyfish
5. Major “Invertebrate” Phyla a. Porifera: Sponges b. Cnidaria: Corals, Hydra, Anemones, Jellyfish Two true tissue layers (diploblastic) Predatory (cnidocytes /nematocysts) Intra- and extracellular Digestion Amebocytes in mesoglea (‘circulatory system’) Radial Symmetry Medusa Polyp
5. Major “Invertebrate” Phyla a. Porifera: Sponges b. Cnidaria: Corals, Hydra, Anemones, Jellyfish “Bilateria” – bilateral symmetry cephalization: getting a head
5. Major “Invertebrate” Phyla a. Porifera: Sponges b. Cnidaria: Corals, Hydra, Anemones, Jellyfish Protostomes - Lophotrochozoans
5. Major “Invertebrate” Phyla a. Porifera: Sponges b. Cnidaria: Corals, Hydra, Anemones, Jellyfish Protostomes - Lophotrochozoans