Amphibians

Amphibians: Evolution from water to land
 * Amphibian Characteristics
 * Amphibian: means "double life"
 * Live in water and on land
 * Amphibians are a link between fish and reptiles
 * Believed to have evolved from the lobe of a finned fish
 * Body Structure
 * Legs (tetrapods) (4 legs)
 * <span style="line-height: normal; margin: 0in 0in 10pt; mso-list: l1 level2 lfo6; mso-margin-bottom-alt: auto; mso-margin-top-alt: auto; tab-stops: list 1.0in;"><span style="font-family: 'Times New Roman','serif'; font-size: 12pt;">Moist Skin
 * <span style="line-height: normal; margin: 0in 0in 10pt; mso-list: l1 level1 lfo6; mso-margin-bottom-alt: auto; mso-margin-top-alt: auto; tab-stops: list .5in;"><span style="font-family: 'Times New Roman','serif'; font-size: 12pt;">Body Function
 * <span style="line-height: normal; margin: 0in 0in 10pt; mso-list: l1 level2 lfo6; mso-margin-bottom-alt: auto; mso-margin-top-alt: auto; tab-stops: list 1.0in;"><span style="font-family: 'Times New Roman','serif'; font-size: 12pt;">Primitive lungs and diffusion through skin for respiration
 * <span style="line-height: normal; margin: 0in 0in 10pt; mso-list: l1 level3 lfo6; mso-margin-bottom-alt: auto; mso-margin-top-alt: auto; tab-stops: list 1.5in;"><span style="font-family: 'Times New Roman','serif'; font-size: 12pt;">Gills as tadpoles
 * <span style="line-height: normal; margin: 0in 0in 10pt; mso-list: l1 level2 lfo6; mso-margin-bottom-alt: auto; mso-margin-top-alt: auto; tab-stops: list 1.0in;"><span style="font-family: 'Times New Roman','serif'; font-size: 12pt;">Three- chambered hearts
 * <span style="line-height: normal; margin: 0in 0in 10pt; mso-list: l1 level2 lfo6; mso-margin-bottom-alt: auto; mso-margin-top-alt: auto; tab-stops: list 1.0in;"><span style="font-family: 'Times New Roman','serif'; font-size: 12pt;">Ecthotherms (cold blooded)
 * <span style="line-height: normal; margin: 0in 0in 10pt; mso-list: l1 level3 lfo6; mso-margin-bottom-alt: auto; mso-margin-top-alt: auto; tab-stops: list 1.5in;"><span style="font-family: 'Times New Roman','serif'; font-size: 12pt;">Body temperature changes with the environment
 * <span style="line-height: normal; margin: 0in 0in 10pt; mso-list: l0 level1 lfo5; mso-margin-bottom-alt: auto; mso-margin-top-alt: auto; tab-stops: list .5in;"><span style="font-family: 'Times New Roman','serif'; font-size: 12pt;">Reproduction
 * <span style="line-height: normal; margin: 0in 0in 10pt; mso-list: l0 level2 lfo5; mso-margin-bottom-alt: auto; mso-margin-top-alt: auto; tab-stops: list 1.0in;"><span style="font-family: 'Times New Roman','serif'; font-size: 12pt;">External fertilizaton
 * <span style="line-height: normal; margin: 0in 0in 10pt; mso-list: l0 level2 lfo5; mso-margin-bottom-alt: auto; mso-margin-top-alt: auto; tab-stops: list 1.0in;"><span style="font-family: 'Times New Roman','serif'; font-size: 12pt;">External development
 * <span style="line-height: normal; margin: 0in 0in 10pt; mso-list: l0 level2 lfo5; mso-margin-bottom-alt: auto; mso-margin-top-alt: auto; tab-stops: list 1.0in;"><span style="font-family: 'Times New Roman','serif'; font-size: 12pt;">Must return to water to lay eggs!!!
 * <span style="line-height: normal; margin: 0in 0in 10pt; mso-list: l0 level1 lfo5; mso-margin-bottom-alt: auto; mso-margin-top-alt: auto; tab-stops: list .5in;"><span style="font-family: 'Times New Roman','serif'; font-size: 12pt;">Metamorphosis
 * <span style="line-height: normal; margin: 0in 0in 10pt; mso-list: l0 level2 lfo5; mso-margin-bottom-alt: auto; mso-margin-top-alt: auto; tab-stops: list 1.0in;"><span style="font-family: 'Times New Roman','serif'; font-size: 12pt;">Egg
 * <span style="line-height: normal; margin: 0in 0in 10pt; mso-list: l0 level2 lfo5; mso-margin-bottom-alt: auto; mso-margin-top-alt: auto; tab-stops: list 1.0in;"><span style="font-family: 'Times New Roman','serif'; font-size: 12pt;">Tadpole
 * <span style="line-height: normal; margin: 0in 0in 10pt; mso-list: l0 level2 lfo5; mso-margin-bottom-alt: auto; mso-margin-top-alt: auto; tab-stops: list 1.0in;"><span style="font-family: 'Times New Roman','serif'; font-size: 12pt;">Adult
 * <span style="line-height: normal; margin: 0in 0in 10pt; mso-list: l0 level1 lfo5; mso-margin-bottom-alt: auto; mso-margin-top-alt: auto; tab-stops: list .5in;"><span style="font-family: 'Times New Roman','serif'; font-size: 12pt;">Amphibian Taxonomy
 * <span style="line-height: normal; margin: 0in 0in 10pt; mso-list: l0 level2 lfo5; mso-margin-bottom-alt: auto; mso-margin-top-alt: auto; tab-stops: list 1.0in;"><span style="font-family: 'Times New Roman','serif'; font-size: 12pt;">Kingdom Animalia
 * <span style="line-height: normal; margin: 0in 0in 10pt; mso-list: l0 level4 lfo5; mso-margin-bottom-alt: auto; mso-margin-top-alt: auto; tab-stops: list 2.0in;"><span style="font-family: 'Times New Roman','serif'; font-size: 12pt;">Phylm Chordata
 * <span style="line-height: normal; margin: 0in 0in 10pt; mso-list: l0 level5 lfo5; mso-margin-bottom-alt: auto; mso-margin-top-alt: auto; tab-stops: list 2.5in;"><span style="font-family: 'Times New Roman','serif'; font-size: 12pt;">Subphylum vertebrata
 * <span style="line-height: normal; margin: 0in 0in 10pt; mso-list: l0 level6 lfo5; mso-margin-bottom-alt: auto; mso-margin-top-alt: auto; tab-stops: list 3.0in;"><span style="font-family: 'Times New Roman','serif'; font-size: 12pt;">Class Amphibia
 * <span style="line-height: normal; margin: 0in 0in 10pt; mso-list: l0 level7 lfo5; mso-margin-bottom-alt: auto; mso-margin-top-alt: auto; tab-stops: list 3.5in;"><span style="font-family: 'Times New Roman','serif'; font-size: 12pt;">Orders: Caudata, Anura, Caecilia
 * <span style="line-height: normal; margin: 0in 0in 10pt; mso-list: l0 level1 lfo5; mso-margin-bottom-alt: auto; mso-margin-top-alt: auto; tab-stops: list .5in;"><span style="font-family: 'Times New Roman','serif'; font-size: 12pt;">Order Caudata
 * <span style="line-height: normal; margin: 0in 0in 10pt; mso-list: l0 level2 lfo5; mso-margin-bottom-alt: auto; mso-margin-top-alt: auto; tab-stops: list 1.0in;"><span style="font-family: 'Times New Roman','serif'; font-size: 12pt;">Salamanders
 * <span style="line-height: normal; margin: 0in 0in 10pt; mso-list: l0 level3 lfo5; mso-margin-bottom-alt: auto; mso-margin-top-alt: auto; tab-stops: list 1.5in;"><span style="font-family: 'Times New Roman','serif'; font-size: 12pt;">Amphibians with tails, smooth skin
 * <span style="line-height: normal; margin: 0in 0in 10pt; mso-list: l2 level2 lfo1; mso-margin-bottom-alt: auto; mso-margin-top-alt: auto; tab-stops: list 1.0in;"><span style="font-family: 'Times New Roman','serif'; font-size: 12pt;">Examples
 * 1) <span style="line-height: normal; margin: 0in 0in 10pt; mso-list: l2 level3 lfo2; mso-margin-bottom-alt: auto; mso-margin-top-alt: auto; tab-stops: list 1.5in;"><span style="font-family: 'Times New Roman','serif'; font-size: 12pt;">Newts are salamanders that live only in water
 * 2) <span style="line-height: normal; margin: 0in 0in 10pt; mso-list: l2 level3 lfo2; mso-margin-bottom-alt: auto; mso-margin-top-alt: auto; tab-stops: list 1.5in;"><span style="font-family: 'Times New Roman','serif'; font-size: 12pt;">Mudpuppy- largest local salamander (2 feet)
 * 3) <span style="line-height: normal; margin: 0in 0in 10pt; mso-list: l2 level3 lfo2; mso-margin-bottom-alt: auto; mso-margin-top-alt: auto; tab-stops: list 1.5in;"><span style="font-family: 'Times New Roman','serif'; font-size: 12pt;">Japanese Hellbender- largest in world (5 feet)
 * <span style="line-height: normal; margin: 0in 0in 10pt; mso-list: l2 level1 lfo2; mso-margin-bottom-alt: auto; mso-margin-top-alt: auto; tab-stops: list .5in;"><span style="font-family: 'Times New Roman','serif'; font-size: 12pt;">Order Caecilia
 * <span style="line-height: normal; margin: 0in 0in 10pt; mso-list: l2 level2 lfo3; mso-margin-bottom-alt: auto; mso-margin-top-alt: auto; tab-stops: list 1.0in;"><span style="font-family: 'Times New Roman','serif'; font-size: 12pt;">Limbless amphibians
 * <span style="line-height: normal; margin: 0in 0in 10pt; mso-list: l2 level2 lfo3; mso-margin-bottom-alt: auto; mso-margin-top-alt: auto; tab-stops: list 1.0in;"><span style="font-family: 'Times New Roman','serif'; font-size: 12pt;">Live in tropical climates
 * <span style="line-height: normal; margin: 0in 0in 10pt; mso-list: l2 level2 lfo3; mso-margin-bottom-alt: auto; mso-margin-top-alt: auto; tab-stops: list 1.0in;"><span style="font-family: 'Times New Roman','serif'; font-size: 12pt;">Usually blind
 * <span style="line-height: normal; margin: 0in 0in 10pt; mso-list: l2 level2 lfo3; mso-margin-bottom-alt: auto; mso-margin-top-alt: auto; tab-stops: list 1.0in;"><span style="font-family: 'Times New Roman','serif'; font-size: 12pt;">Ex: Caecilians
 * <span style="line-height: normal; margin: 0in 0in 10pt; mso-list: l2 level1 lfo3; mso-margin-bottom-alt: auto; mso-margin-top-alt: auto; tab-stops: list .5in;"><span style="font-family: 'Times New Roman','serif'; font-size: 12pt;">Order Anura
 * <span style="line-height: normal; margin: 0in 0in 10pt; mso-list: l2 level2 lfo3; mso-margin-bottom-alt: auto; mso-margin-top-alt: auto; tab-stops: list 1.0in;"><span style="font-family: 'Times New Roman','serif'; font-size: 12pt;">General Info
 * 1) <span style="line-height: normal; margin: 0in 0in 10pt; mso-list: l2 level3 lfo4; mso-margin-bottom-alt: auto; mso-margin-top-alt: auto; tab-stops: list 1.5in;"><span style="font-family: 'Times New Roman','serif'; font-size: 12pt;">Some are poisonous
 * 2) <span style="line-height: normal; margin: 0in 0in 10pt; mso-list: l2 level3 lfo4; mso-margin-bottom-alt: auto; mso-margin-top-alt: auto; tab-stops: list 1.5in;"><span style="font-family: 'Times New Roman','serif'; font-size: 12pt;">Vocal cords produce sounds for mating
 * 3) <span style="line-height: normal; margin: 0in 0in 10pt; mso-list: l2 level3 lfo4; mso-margin-bottom-alt: auto; mso-margin-top-alt: auto; tab-stops: list 1.5in;"><span style="font-family: 'Times New Roman','serif'; font-size: 12pt;">Frogs (more aquatic)
 * 4) <span style="line-height: normal; margin: 0in 0in 10pt; mso-list: l2 level3 lfo4; mso-margin-bottom-alt: auto; mso-margin-top-alt: auto; tab-stops: list 1.5in;"><span style="font-family: 'Times New Roman','serif'; font-size: 12pt;">Toads (more terrestrial)

[] This is a very good article about frogs. Youwill learn a lot here Ernesto. Video Clip 1: African Bullfrog Citation: [] Video Clip 2: Giant Japanesse Salamader Citation: []

Picture 1: Salamander

Picture 2: Frog

Picture 3: Toad

Picture 4:

Picture 5: Salamander