animals - deuterostomes

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Animals - Deuterostomes. Chapter 30. Characteristics. Similarities in embryonic development: Radial cleavage Indeterminate cleavage Blastopore becomes the anus Pharyngeal slits . Echinoderms: Spiny-skinned animals. - PowerPoint PPT Presentation

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  • Animals - Deuterostomes

    Chapter 30

  • CharacteristicsSimilarities in embryonic development:Radial cleavageIndeterminate cleavageBlastopore becomes the anusPharyngeal slits

  • Echinoderms: Spiny-skinned animalsSea lilies, feather stars, sea stars, brittle stars, sea urchins, sand dollars, sea cucumbers, sea daisiesEndoskeleton covered by a thin epidermisWater vascular systemRadial symmetryAll are marine

  • ChordatesTunicates, Lancelets, and vertebratesFour characteristics:NotochordDorsal tubular nerve cordPharyngeal slitsPostanal 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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