Chordates 2 - Photo Credit: Peter Scheunis, 2005, Wikimedia...

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Chordates, Part 2 BIOL 1407
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Lobe-Finned Vertebrates Fins and limbs supported by internal bones and muscles
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Photo Credit: Courtesy of Dennis Murphy, Devonian Times, http:// www.devoniantimes.org/opportunity/tetrapodsAnswer.html Lobe-Fin Pattern
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Amphibians Tetrapods Moist skin External Fertilization Eggs need water Aquatic larvae
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Salamanders and Newts Frogs and Toads Caecilians
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Reptiles Amniotes Reproduce without water Internal Fertilization Tough keratinized skin Scales and feathers made of keratin Photo Credit: Doyle Cross, 2008
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Photo Credit of Red-throated Bee Eater: Tom Tarrant, 2008, Wikimedia Commons
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Mammals Hair Mammary Glands Three middle ear bones Single lower jaw bone Differentiated teeth Photo Credit: Eric Mas Casas, 2008, Wikimedia Commons
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Monotremes Lay eggs Mammary glands No nipples Echidnas Duck-billed platypus
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Unformatted text preview: Photo Credit: Peter Scheunis, 2005, Wikimedia Commons Marsupials Young are born very early Finish development in marsupium = pouch Photo Credit of Wallaby and Joey: Benjamint444, 2008, Wikimedia Commons Photo Credit of Numbat: Gnangarra, 2006, Wikimedia Commons Photo Credit of Wallabies: Roland Zumbhl, 2004, Wikimedia Commons Eutherians = Placental Mammals Placenta to nourish young within uterus Born at late stage of development Photo Credit: Nevit Dilmen, 2008, Wikimedia Commons Photo Credit: John Storr, 1997, Wikimedia Commons Photo Credit: John Storr, 1997, Wikimedia Commons The End Unless otherwise specified, all images in this presentation came from: Campbell, et al. 2008. Biology, 8 th ed. Pearson Benjamin Cummings. Slide #43 is from 7 th edition, Campbell, et al....
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This note was uploaded on 10/01/2011 for the course BIOL 1407 taught by Professor Lisagloyna during the Spring '09 term at Austin Community College.

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Chordates 2 - Photo Credit: Peter Scheunis, 2005, Wikimedia...

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