Feather types - PowerPoint PPT Presentation

Feather Morphology

Feather Morphology. Advanced Biology – Spring 2013. Feathers. Feathers. First seen in the Jurassic Period . Feathers. First seen in the Jurassic Period bird-reptile Archaeopteryx. Feathers. First seen in the Jurassic Period bird-reptile Archaeopteryx. Feathers.

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Vertebrates: Part II

Vertebrates: Part II. Reptiles &amp; Birds. Reptiles. Dry body covering Scales made of keratin Heart has 3 chambers Well-developed lungs Toes have claws. Reptile Reproduction. Amniote Egg developed Internal fertilization. Homeostasis. Modern reptiles = ectotherms

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