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Phylum Chaetognatha: Arrow Worms
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Classroom Contents
Zoology
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- 1 Introduction to Zoology: What are Animals?
- 2 Cladistics Part 1: Constructing Cladograms
- 3 Cladistics Part 2: Monophyly, Paraphyly, and Polyphyly
- 4 Major Divisions of Kingdom Animalia and the Problem With Animal Phyla
- 5 Endosymbiosis, Choanoflagellates, and the Origin of Animal Life
- 6 Stages of Animal Development: Cleavage, Gastrulation, Organogenesis
- 7 Organization and Symmetry in Kingdom Animalia
- 8 Phylum Porifera: Sponges
- 9 Phylum Cnidaria Part 1: Introduction and Broad Characteristics
- 10 Phylum Cnidaria Part 2: Class Hydrozoa
- 11 Phylum Cnidaria Part 3: Classes Scyphozoa and Staurozoa
- 12 Phylum Cnidaria Part 4: Class Cubozoa
- 13 Phylum Cnidaria Part 5: Class Anthozoa
- 14 Phylum Cnidaria Part 6: Coral Reefs
- 15 Phylum Cnidaria Part 7: Myxozoa and Polypodiozoa
- 16 Phylum Placozoa: Plate Animals
- 17 Phylum Ctenophora: Comb Jellies
- 18 Phylum Xenacoelomorpha and an Introduction to Nephrozoa
- 19 Introduction to Spiralia and Lophotrochozoa
- 20 Phylum Platyhelminthes Part 1: General Characteristics
- 21 Phylum Platyhelminthes Part 2: Free-Living Flatworms and the Problem With Turbellaria
- 22 Phylum Platyhelminthes Part 3: Parasitic Trematodes and Monogeneans
- 23 Phylum Platyhelminthes Part 4: Tapeworms of Class Cestoda
- 24 Phylum Gastrotricha: Hairybellies
- 25 Phylum Cycliophora: Ring-Bearing Symbions
- 26 Phyla Orthonectida and Dicyemida: Mesozoans
- 27 Phylum Chaetognatha: Arrow Worms
- 28 Phylum Gnathostomulida: Jaw Worms
- 29 Phylum Micrognathozoa: Tiniest Invertebrates on Earth
- 30 Phylum Rotifera Part 1: General Characteristics
- 31 Phylum Rotifera Part 2: Four Major Clades
- 32 Phylum Rotifera Part 3: Subclade Acanthocephala (Parasitic Spiny-Headed Worms)
- 33 Phylum Mollusca Part 1: General Introduction
- 34 Phylum Mollusca Part 2: Class Gastropoda (Slugs and Snails)
- 35 Phylum Mollusca Part 3: Class Bivalvia (Clams, Oysters, Mussels, etc.)
- 36 Phylum Mollusca Part 4: Class Cephalopoda (Squids, Nautiluses, Cuttlefish, and Octopuses)
- 37 Phylum Mollusca Part 5: The Lesser Known Classes
- 38 Phylum Annelida Part 1: General Characteristics
- 39 Phylum Annelida Part 2: Polychaeta (Segmented Marine Worms)
- 40 Phylum Annelida Part 3: Oligochaeta and Hirudinea (Segmented Terrestrial/Aquatic Worms and Leeches)
