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Phylum Arthropoda Jointed appendages Exoskeleton Bilateral symmetry Open Circulatory System Well developed nervous system with a Brain Well developed muscles

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Page 1: Phylum Arthropoda Jointed appendages Exoskeleton Bilateral symmetry Open Circulatory System Well developed nervous system with a Brain Well developed muscles

Phylum Arthropoda• Jointed appendages• Exoskeleton• Bilateral symmetry• Open Circulatory System• Well developed nervous

system with a Brain• Well developed muscles

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Subphylum Uniramia

• Unbranched appendages

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Subphylum Uniramia

• Unbranched appendages

• Jaws

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Jaws

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Subphylum Uniramia

• Unbranched appendages

• Jaws

• One pair of antennae

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Class Insecta

• Six walking legs

• Three body sections

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Mosquito

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Dragonfly

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Wasp

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Ants

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Grasshopper

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Praying Mantis

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MonarchButterfly

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Butterfly Metamorphosis

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Zebra Butterfly

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Bee

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Walking stick

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Class Chilopoda

• Has many body segments• Each segment has one pair of legs• Centipedes

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Centipede fangs

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Class Diplopoda

• Each segment has two pairs of legs

• millipedes

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Subphylum Chelicerata• Specialized Mouth Parts:

– Chelicerae • Move up & down (stab)

• Often have fangs

– Pedipalps (used to grab prey)

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Chelicerae with Fangs

Pedipalps

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Subphylum Chelicerata

• Specialized Mouth Parts

• 2 body sectionscephalothoraxabdomen

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Class Arachnida

8 Walking Legs

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Spiders

8 Simple eyes

Silk glands

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Banana Spider

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Crab Spider

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Flame TarantulaFlame Tarantula

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Tarantula

Chelicerae

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Scorpion

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Chelicerae

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Scorpion Chelicerae

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Deer Tick

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Tick under a microscope

Chelicerae

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Mite

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Water mite

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Class Merostomata

Horseshoe CrabOnly living member of this class

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Horseshoe crab chelicerae

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Horseshoe Crab

Compound eyes

Book gills

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Many Taxonomists split the class Merostomata into two classes:

• Xiphosura – horseshoe crabs

• Eurypterida - eurypterids

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Subphylum Crustacea

• 10 legs

• Two pair of antennae

• Mandibles (chewing mouthparts)

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Blue Crab Mandibles

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Subphylum Crustacea

• 10 legs• Two pair of antennae• Mandibles (chewing mouthparts)• 2 or 3 body parts• Predominantly aquatic

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Spiny Lobster

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Banded Coral Shrimp

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Anemone Shrimp

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Anemone Shrimp

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Peterson’s Shrimp

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Shrimp

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Red Night Shrimp

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Spider Crab

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Arrow Crab

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Star-eyed Hermit Crab

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Decorator Crab

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Gooseneck Barnacles

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http://www.oceanfootage.com/video_clips/HH10_012

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Pill Bug