html5-img
1 / 10

Mammalia

Mammalia. Mammal Evolution. Mammals are believed to have evolved from Reptiles during the late_________________________. Mammal Evolution. The first true mammal was a small, shrew-like organism that coexisted with Dinosaurs: ________________________________________

dai-herring
Download Presentation

Mammalia

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. Mammalia

  2. Mammal Evolution • Mammals are believed to have evolved from Reptiles during the late_________________________

  3. Mammal Evolution • The first true mammal was a small, shrew-like organism that coexisted with Dinosaurs: ________________________________________ • Ex. Hadrocodium fossil found in Northern China in 2002

  4. Mammal Evolution • Mammal’s inner-ear bones probably evolved from modified ancestral reptile jaw bones • _____________________________________________

  5. Where did the ancestral mammal originate from? http://www.mnh.si.edu/mammals/pages/how/index.htm

  6. Based on the website just viewed where did the ancestral mammal originate from?_____________ How did the earth change over time?___________ How could this have changed the environment? _______________________________ Could this environmental change cause a change in the type of species found?___________________

  7. The Synapsids Many synapsids had features considered characteristic of mammals, not reptiles.:___________________________________________________________

  8. Synapsids • Synapsids_________________ openings reptiles only have _____ • Synapsids have_____________________, reptiles do not How do you get from a reptile like mammal to a mammal ?

  9. Using the cladogram on the following slide answer the following questions: • 1. What organisms are most closely related to placental mammals?________________________ • 2. What are the three types of mammals? • ______________,_______________,____________ • 3. What organism is least related to mammals?________________ • 4. What is the ancestor of all mammals?__________ • 5. What do you think the ancestor look like? (hint look back at your notes)_____________

  10. Macroevolution

More Related