TRANSITION BETWEEN FISH AND AMPHIBIAN
- The transition between fish and amphibian was a slow and gradual process and the diagrams shown show the results of the minor adjustments made between the skulls and forearms.
- These adjustments made it increasingly easier for these early amphibians to walk on dry land.
- Certain features that develop in fish to better equipt themselves as fish, like lobed fins or lungs, is due to preadaptation .