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Phylum Chordata Notochord Nerve chord Tail Pharyngeal slits
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Phylum Chordata Notochord Nerve chord Tail Pharyngeal slits.

Jan 29, 2016

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Avice Sparks
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Page 1: Phylum Chordata Notochord Nerve chord Tail Pharyngeal slits.

Phylum Chordata

• Notochord• Nerve chord• Tail• Pharyngeal slits

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Evolution of the jaw

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Phylum Chordata

• Notochord• Nerve chord• Tail• Pharyngeal slits

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Subphylum Urochordata

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Sea Squirts

Have notochord as a larvae

Sessile as adult

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Tunicate (Sea Squirt)

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Slipper Tunicate

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Stalked Tunicate

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Subphylum Cephalochordata

- Lanceletes

(AKA: Amphioxus)

notochord

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Subphylum Cephalochordata-Poorly developed brain

- Poorly developed sense organs

-Considered an evolutionary link between invertebrates and vertebrates

notochord

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Subphylum VertebrataSubphylum Vertebrata• Spinal chordSpinal chord• Movement accomplished w/ muscles attached to Movement accomplished w/ muscles attached to

an endoskeletonan endoskeleton• Digestive system w/ liver, digestive glands and Digestive system w/ liver, digestive glands and

pancreaspancreas• Heart w/ 2-4 chambersHeart w/ 2-4 chambers• Blood containing hemoglobinBlood containing hemoglobin• Paired kidneysPaired kidneys• General body plan consisting of a head, trunk General body plan consisting of a head, trunk

and two pairs of appendages (some are highly and two pairs of appendages (some are highly modified!)modified!)

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Class AgnathaClass Agnatha

• Jawless fishJawless fish

• Cartilage skeletonCartilage skeleton

• Gill slitsGill slits

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Gill SlitsGill Slits

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Class AgnathaClass Agnatha

• Jawless fishJawless fish

• Cartilage skeletonCartilage skeleton

• Gill slitsGill slits

• No swim bladderNo swim bladder

• Two chambered heartTwo chambered heart

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Two Chambered Heart

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HagfishHagfish

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HagfishHagfishmouthmouth

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Lamprey

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Lampreymouth

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Class Chondrichthyes• Cartilage skeleton

• Gill slits

• Dermal denticles (skin teeth)

• No swim bladder

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Prehistoric Sharks

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Nurse Shark

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Reef Shark

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Hammerhead Shark

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Southern Sting Ray

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Spotted Eagle Ray

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Class Osteichthyes

• Bony skeleton

• Swim bladder

• Operculum

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Nassau Grouper

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Beaugregory Damselfish

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Queen Parrotfish

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Spotfin Butterflyfish

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Gray Angelfish

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Moray Eel

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Seahorse

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Class Amphibia

• Aquatic juvenile• Terrestrial adult

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Class Amphibia

• Aquatic juvenile• Terrestrial adult• Thin, moist skin• Must live in wet habitat• Three Chambered Heart

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Tree Frog

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American Toad

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Salamander

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Salamander Larvae

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Redspot Newt

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Class Reptilia

• Thick, scaly skin• Lay eggs on land• 4 chambered heart, but ventricles not

completely divided

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Reptiles

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Corn Snake

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Ribbon Snake

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Red Tailed Boa

Constrictor

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Green Iguana

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Leopard Geckos

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American Alligator

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Baby Alligator

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Hawksbill Sea Turtle

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Green Sea Turtle

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Red-Bellied Turtle

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Class Aves

• Endothermic (warm blooded)

• Incubate eggs• Feathers• Hollow bones• Beak• 4 chambered heart

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Birds - Aves

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Osprey

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Great Blue Heron

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Green Backed Heron

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White Ibis

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Roseate Spoonbills

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Brown Pelican

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Class Mammalia

• Endothermic (warm blooded)

• Fur• Nurse young• 4 Chambered

Heart

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Mammals

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Subclass Monotremata

• Lay eggs

• Nurse young

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Duck Billed Platypus

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Platypus Egg

Babies

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Spiny Anteater

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Subclass Metatheria

• Marsupial

• Pouch

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Kangaroo

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Baby weighs about 1 gram (0.4 oz)

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Koala

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Baby Koala

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Oppossum

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Sugar Gliders

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Subclass Eutheria

Placental Mammals

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RodentsRodents

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Rodents

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RodentsRodents

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Cats

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DogsDogs

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BatsBats

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Marine MammalsMarine Mammals

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Manatees

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Farm animals

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Elephants

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