1 / 14

Evolution and Adaptations of Vertebrates: A Closer Look at Birds

Explore the intricate evolution of vertebrates, focusing on birds and their unique features such as feathers, amniotic eggs, and efficient respiration. Discover why birds have been so successful in nature and how their beaks play a crucial role in their adaptation.

jacob-carey
Download Presentation

Evolution and Adaptations of Vertebrates: A Closer Look at Birds

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Vertebrates • Subphylum Vertebrata • Internal jointed skeleton of vertebrates is living tissue that grows with the animal • Main axis of skeleton consists of vertebral columns and a skull that encloses the brain • Cephalization is accompanied by sense organs • Evolution of jaws and predation • Amnion allows reproduction on land

  2. Phylogenetic Tree of the Chordates

  3. Vertebrate Features • Living endoskeleton with vertebral column • Closed circulatory system • Paired appendages • Efficient respiration and excretion • High degree of cephalization • Adapted to active lifestyles

  4. Phylogenetic Tree of Reptiles

  5. Birds • Characteristics of Class Aves • Feathers • Hard-shelled amniotic egg • Four-chambered heart • Often winged • Air sacs • Endothermic

  6. Alligator vs Bird “hands & feet”

  7. Archeopteryx fossil from Bavaria How is it different from modern birds?

  8. Common features between archeopteryx and modern birds (in black)

  9. • Approximately 9,000 – 9,600 species – Amphibia 4,184 –Reptilia 6,300 –Mammalia 4,000 • 30 orders, 174 families and 2044 genera Why do you think birds are so successful? Birds Today

  10. Bird Beaks – Why the difference?Why are these beaks different?

More Related