1 / 3

Lecture 6 ANIMAL EVOLUTION: THE VERTEBRATES

Lecture 6 ANIMAL EVOLUTION: THE VERTEBRATES. Lobe-finned fishes. Have fleshy ventral fins reinforced with external skeleton. Lungfishes. Have gills and one or two small modified outpouchings of the gut wall. These sacs help in taking in O 2 and to remove CO 2 .

shalin
Download Presentation

Lecture 6 ANIMAL EVOLUTION: THE VERTEBRATES

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. Lecture 6ANIMAL EVOLUTION: THE VERTEBRATES

  2. Lobe-finned fishes • Have fleshy ventral fins reinforced with external skeleton

  3. Lungfishes • Have gills and one or two small modified outpouchings of the gut wall. • These sacs help in taking in O2 and to remove CO2. • Probably share the common ancestor with four-legged walkers-tetrapods.

More Related