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Phylum Hemichordata
Class Enteropneusta
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Class Enteropneusta
Genus Saccoglossus
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Genus Saccoglossus
Common Name: Acorn Worm
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Phylum Chordata
- Subphylum Urochordata
- Subphylum Cephalochordata
- Subphylum Vertebrata
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Subphylum Urochordata
The Tunicate
Genus Stylela
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Subphylum Vertebrata
- Superclass Agnatha
- Superclass Gnathostomata
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Subphylum Cephalochordata
The Lancelets
Genus Branchiostoma
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Superclass Agnatha
The Jawless Fish
- Class Myxini (hagfish)
- Class Petromyzontida (lampreys)
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Superclass Gnathostomata
- Class Chondrichthyes (cartilaginous fishes)
- Class Actinopterygii (ray-finned fishes)
- Class Amphibia
- Class Reptilia
- Class Aves
- Class Mammalia
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Class Chondrichthyes
Subclass Elasmobranchii (Sharks, Rays, and Skates)
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Subclass Elasmobranchii
- Genus Dasyatis (Atlantic Stingray)
- Genus Raja (Skate)
- Genus Squalus (dogfish shark)
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Class Actinopterygii
Subcless Neopterygii (modern bony fishes)
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Subclass Neopterygii
Order Perciformes (sunfishes, darters, perches)
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Order Perciformes
- Genus Lepomis (sunfish)
- Genus Micropterus (bass)
- Genus Perca (perch)
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Class Amphibia
The Amphibians
- Order Gymnophiona (caecilians)
- Order Caudata (salamanders and newts)
- Order Anura (frogs and toads)
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Order Caudata
Genus Necturus (mudpuppy)
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Order Anura
- Genus Bufo (toad)
- Genus Rana (bullfrog)
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Class Reptilia
The Reptiles
- Order Testudines (turtles)
- Order Squamata (lizards and snakes)
- Order Crocodilia (crocodilians)
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Order Testudines
- Genus Terrapene (box turtles)
- Genus Trachemys (red-eared slider)
- Genus Chelydra (snapping turtle)
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Order Squamata
- Genus Phrynosoma (horned lizard)
- Genus Lacerta (wall lizard)
- Genus Agkistrodon (copperhead and cottonmouth)
- Genus Crotalus (rattlesnakes)
- Genus Nerodia (watersnakes)
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Order Crocodilia
- Genus Alligator (alligator)
- Genus Caiman (caimans)
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Class Mammalia
Subclass Theria
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Subclass Theria
- Infraclass Metatheria
- Infraclass Eutheria
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Infraclass Metatheria
Order Didelphimorphia (opossum)
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Order Soricomorpha
Shrew and Moles
in Infraclass Eutheria
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Order Chiroptera
Bats
in Infraclass Eutheria
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Order Cingulata
Armadillos
in Infraclass Eutheria
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Order Lagomorpha
Rabbits and Hares
in Infraclass Eutheria
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Order Rodentia
Mice, Beavers, Squirrels
in Infraclass Eutheria
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Order Carnivora
Dogs, Skunks, Cats
in Infraclass Eutheria
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Order Perissodactyla
Horses
in Infraclass Eutheria
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Order Artiodactyla
Deer, Elk, Bison, Cattle
in Infraclass Eutheria
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Order Passeriformes
Perching or song birds
In Class Aves
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Order Falconiformes
Eagles, Hawks, Falcons
In Class Aves
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Order Strigiformes
Owls
In Class Aves
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Order Apodiformes
Hummingbirds
In Class Aves
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Order Charadriiformes
Gulls, Shore Birds
In Class Aves
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Order Piciformes
Woodpeckers
In Class Aves
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Order Galliformes
Quail, Grouse, Turkeys
In Class Aves
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Order Columbiformes
Dove, Pigeons
In Class Aves
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Order Anseriformes
Ducks, Geese, Swans
In Class Aves
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Order Ciconiformes
Herons, Egrets
In Class Aves
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Order Cuculiformes
Cuckoos, Roadrunners
In Class Aves
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Order Caprimulgiformes
Night Hawks, Whip-Poor-Will
In Class Aves
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Angora Hair
Hair the grows continuously
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Definitive Hair
Hair that only grows to a certain length
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Vibrissae
Long stiff hairs that are well innervated at the base. "whiskers"
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Guard Hairs
the most conspicuous hairs on the bodies of most mammals
awns, bristles, and spines
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Awns
Guard hair with definitive growth that covers the bodies of most mammals
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Bristles
Guard hair with angora growth such as a lion's mane
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Spines
guard hair specialized for defense
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Underhairs
function primarily as insulators
wool, fur, and velli
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Velli
very fine "fuzz" underhair found on embryos
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Eumelanin
blacks and brown
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Pheomelanin
red and yellows
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Cryptic Coloration
conceals and individual from potential predators
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Disruptive Coloration
typically seen as sharply contrasting patterns of light and dark colors
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Countershading
occurs when the dorsum is dark and the ventral surface is light. Blend in with ground or sky
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True Horns
- occur only in the family Bovidae
- unbranched and permanent
- may be found on both males and females
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Pronghorns
- sheaths are "pronged"
- epidermal sheath is shed annually
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Antlers
- occur on all makes in the family Cervidae
- Typically branched and are shed annually
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