Animals - Deuterostomes Chapter 30. Characteristics  Similarities in embryonic development:  Radial cleavage  Indeterminate cleavage  Blastopore becomes.

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Presentation transcript:

Animals - Deuterostomes Chapter 30

Characteristics  Similarities in embryonic development:  Radial cleavage  Indeterminate cleavage  Blastopore becomes the anus  Pharyngeal slits

Echinoderms: Spiny-skinned animals  Sea lilies, feather stars, sea stars, brittle stars, sea urchins, sand dollars, sea cucumbers, sea daisies  Endoskeleton covered by a thin epidermis  Water vascular system  Radial symmetry  All are marine

Chordates  Tunicates, Lancelets, and vertebrates  Four characteristics: 1. Notochord 2. Dorsal tubular nerve cord 3. Pharyngeal slits 4. Postanal tail

Agnatha – lampreys & hagfish

Cartilagenous fish – Sharks, skates, & rays

Bony Fish – most fish are in this group

Frogs – have smoother skin than Toads

Salamanders & Newts

Caecilian

Modern Reptiles

Birds

Along came mammals: Monotremes lay eggs

Marsupials: Pouched Mammals

Placental Mammals

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