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ACTINOPYERYGII

• Archerfish (Toxotes Jaculatrix).
• Classified by their lepidotrichia, gill covering plates, and skeletal formation.
• Differs from Chondricthes in gill plates, ray-fins, and bone skeletal system.
• Archerfish shoot water droplets from specialized mouths to hunt arthropods
• Hunt mainly land based arthropods.

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CHONDRICTHES

• Spotted river stingray (Potamotrygon leopoldi)
• Classified by their cartiligenous makeup and lack of gill coverings.
• Paired fins and a chambered heart.
• The spotted river stingray have a venomous caudical sting.
• The only family of batoids completely restriced to freshwater.

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CRUSTACEA

• An ocean shrimp
• An Arthropod, crustaceans are mainly aquatic.
• Characterized by their biramous traits and the nauplius form of the larva
• The scientific study of crustaceans is carnicology, the scientist is a carnicologist.
• A terrestrial example of a crustacean is armadillidium vulgare (pillbugs)

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GASTROPODA

• A jungle snail.
• Characterized by a true shell secreted by the mantle.
• Chracterized also by a mantle that can form a primitive lung.
• Characterized also by their feeding mouthpart, the radula.
• To date 611 different species of gastropods are known 202 are extinct

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CEPHALOPODA

• Gift shop pacific octopus (enteroctopus dofleini giftshopicus)
• Cephalopoda can be characterized by bilateral symmetry, a prominant head, and arms
• Different than other Mollusca subphyla in that their "foot" is really muscular arms
• 800 Living species of Cephalopods known today including Coleoidae and Nautiloidea
• The study of Cephalopods is a branch of Malacology known as Tuethology.

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ARTHROPODA

• Arthropod example: Leaf-Cuttwr Ants (Atta Colombica)
• Classified by a Chitinois Exoskeleton, jointed appendages, and segmentation
• Different from Molluska in that they developed a hard exoskeleton.
• Contains the subphyla Hexapoda, Chelicerata, myriapoda, Crustacea
• The Arthropod fmily dates back to the Cambrian Period.

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HEXAPODA

• Leaf-Cutter Ant
• classified by Body Segmentation, and three pairs of legs.
• Different than other Arthropod subphyla by the number of legs
• Hexapoda contains Diplura, Collembola, and Protura as well as insects
• Leaf cutter ants develop highways and will clear the highway if blocked

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CHELICERATA

• Tarantula
• Classified by an exoskeleton with celhalothorax and an abdomen
• Chelicerata contain no Antennae, But do have specialization in their limbs.
• Segments are modified and specialized for various tasks.
• Chelicerata contains Horseshoe Crabs and Arachnids.

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MYRIAPODA

• Centipede
• Classified by the many segments and the leg pairs for each segment.
• Centipedes have venomous claws called maxillipeds for hunting and defense.
• Centipedes are primarily carnivorous, but millipedes are primarily herbivores.
• Millipedes differ from centipedes as their segments are fused into pairs.

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BIVALVA

• Clam or a mussel
• Bivalves are filter feeders and contain no radula as adults.
• Bivalves are asymmetrical and countain a foot like other Mollusks.
• Bivalves secrete two valves from their mantle for protection.
• Bivalves contain inductor muscles to hold themselves shut.

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CNIDARIANS

• Coral
• Chindarians are classified by their two cell layers, amd cnidocytes.
• Two cell layers allows for specialization of cells as compared to poriferids.
• Cnidocytes are specialized cells that have triggerable harpoons and venom.
• Cnidocytes are used to capture prey, but may be triggered by simple touch alone.

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ANNELIDA

• Earthworm
• Tube shaped, segmented worms, ceolum allows for structure.
• Body is segmented, hydrostatic skeleton (Ceolum) and hermaphrodites.
• Three tissue layers, and organized on an organ level.
• Earthworms live in damp soil and must stay wet to keep from drying out.

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PORIFERA

• Sponges.
• Poriferids are organisms oraganized at the cellular level.
• Each cell can become any other type of cell in the body.
• Filter feeders utilizing incurrent pores, collar cells, and an osculum to feed.
• Cells can communicate chemically to reform the sponge if destroyed.

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MOLLUSKA

• Molluska phylum consists of Gastropods, Cephalopods, and bivalves
• Mollusks developed the defining characteristic of a mantle.
• In almost all types of mullosk the mantle secretes a structure for support.
• Mollusks are different from other phyla in the development of a mantle.
• Bivalves secrete valves instead lf true shells.

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AVES

• Aves are different from other chordates in the development of feathers and hollow bones.
• Aves as we commonly see them are birds that can fly, though there are terrestrial based birds.
• Kiwis, flight.ess birds that live in New Zealand, stomp the ground to lure worms up to eat.
• Dinosaurs, Dinosauria, are speculated to have had feathers.
• Archaeopteryx is commonly viewed as the figurehead of the feathered dinosaurs transition to birds

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REPTILIA

• Retilia
• Reptiles are chordates that differ from other chordates.
• Reptiles developed a cold blooded system with scales and the Amniote.
• Reptiles are the next stage from amphibians as they are not rooted to the water.
• Some retiles such as the Tuatara and the Crocodilians are fairly ancient species.

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AMPHIBIA

• Amphibia
• Amphibia is a chordate that is tied to the water and is a bridge for animalian terrestrial life.
• Amphibia differs from other chordates in that they are partly terrestrial and partly aquatic.
• Amphibians spend the beginning of their life as a larvae and metamorphicize into terrestrial adults
• The poison dart frog secretes a toxin fromtheir skin that the native peoples of the area use on darts.

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MAMMALIA

• Mammalia differ from other chordates in that they have hair.
• They differ in that they feed their young with milk, and that they are endothermic.
• Mammals endothermic tendencies allowed them to effectively spread across the globe.
• Mammals are synapsids, meaning they have a gal in the skull, noticibly for the development of jaw muscles.
• Some primitive mammals such as the Echidna or the Platypus still lay eggs instead of producing live young.

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THE EXOTIC MR. BURNS

• The mr burns is a type of chordate known as a mammal.
• The mr burns has tendencies to teach other humans, primarily the juveniles of OSH.
• The mr burns has a lot of interesting stories to tell.
• The mr burns awards points (Hint nint, nudge nudge.)
• The mr burns enjoys reading these and hopefully did not need to look up too much 4 thisr