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Evolution of Amphibians: From Water to Land

Explore the transition of creatures from water to land, understand the evolution of early amphibians, compare frog life cycles, predict amphibian evolution. Dive into the journey of life onto the terrestrial realm.

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Evolution of Amphibians: From Water to Land

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  1. Moving onto Land:The Evolution of Amphibians Katingo Vati

  2. By the end of the lesson you will... • Understand and be able to recount events that lead up to the first amphibians. • Be able to explain how and why the first amphibians evolved. • Be able to compare the life cycle of a frog to the evolution of the first amphibians. • Predict what amphibians evolve into.

  3. What has happened so far? https://commons.wikimedia.org/wiki/File:Timeline_evolution_of_life.svg

  4. First life in the water (Complex Creatures)

  5. Discosauriscuspulcherrimus from Jince, Czech Republic Collection of paleontology of the Geological Museum of the Barcelona Seminari (MuseuGeològic del Seminari de Barcelona) Jordiferrer [CC BY-SA 3.0 (https://creativecommons.org/licenses/by-sa/3.0)] https://commons.wikimedia.org/wiki/File:Fossils_-_Museu_Geol%C3%B2gic_del_Seminari_de_Barcelona_25.JPG Nobu Tamura (http://spinops.blogspot.com) [CC BY-SA 3.0 (http://creativecommons.org/licenses/by-sa/3.0/)] https://commons.wikimedia.org/wiki/File:Discosauriscus_BW.jpg

  6. Moving onto land Discuss with your group... Why did some creatures decide to leave the water?

  7. In and Out of Water Some of the creatures that started leaving the seas were fish-like and had backbones and fins. By Dave Souza https://commons.wikimedia.org/wiki/File:Fishapods.jpg#filelinks After breathing air from the surface of the water, they used their fins to push themselves out onto the river and lake banks. Eusthenopteron was the first fish to leave the water.

  8. Life Cycles and Evolution Timelines What is the difference between a cycle and a timeline? Epipelagic [CC BY-SA 3.0 (https://creativecommons.org/licenses/by-sa/3.0)] https://commons.wikimedia.org/wiki/File:Fish_evolution.png https://commons.wikimedia.org/wiki/File:Metamorphosis_frog_Meyers.png

  9. Early Amphibians Ichthyostegawas one of the first amphibians. It had strong muscular legs and feet with 5 toes, however its tail was similar to that of a fish. Even though its legs were strong enough to walk on land, it spent most of the time in the water. Nobu Tamura (http://spinops.blogspot.com) [CC BY-SA 3.0 (http://creativecommons.org/licenses/by-sa/3.0/)] https://commons.wikimedia.org/wiki/File:Ichthyostega_BW.jpg

  10. Be Creative! Ichthyopteron (fish wing) Ichthyo (fish) + pteron (wing)

  11. Sources: • LadyofHats [CC0], <a href="https://commons.wikimedia.org/wiki/File:Timeline_evolution_of_life.svg">via Wikimedia Commons</a> • https://www.photosforclass.com/ For slide 4 • Jordiferrer [CC BY-SA 3.0 (https://creativecommons.org/licenses/by-sa/3.0)] https://commons.wikimedia.org/wiki/File:Fossils_-_Museu_Geol%C3%B2gic_del_Seminari_de_Barcelona_25.JPG • Nobu Tamura (http://spinops.blogspot.com) [CC BY-SA 3.0 (http://creativecommons.org/licenses/by-sa/3.0/)]https://commons.wikimedia.org/wiki/File:Discosauriscus_BW.jpg • By Dave Souza-https://commons.wikimedia.org/wiki/File:Fishapods.jpg#filelinkshttps://en.wikipedia.org/wiki/GNU_Free_Documentation_Licensehttps://creativecommons.org/licenses/by-sa/3.0/deed.en • Epipelagic [CC BY-SA 3.0 (https://creativecommons.org/licenses/by-sa/3.0)] https://commons.wikimedia.org/wiki/File:Fish_evolution.png • See page for author [Public domain], <a href="https://commons.wikimedia.org/wiki/File:Metamorphosis_frog_Meyers.png">via Wikimedia Commons</a> • Nobu Tamura (http://spinops.blogspot.com) [CC BY-SA 3.0 (http://creativecommons.org/licenses/by-sa/3.0/)]https://commons.wikimedia.org/wiki/File:Ichthyostega_BW.jpg • The image on slide 10 was designed by Katingo Vati. I, Katingo Vati, give the authorization to the public to use these photos exclusively related to the ERASMUS project CLIL-prime.

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