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Ichthyostega (East Greenland, 365 million years) hind limb
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Classroom Contents
A Big Step for a Fish – The Evolution of Four-Legged Land Animals
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- 1 A big step for a fish - the evolution of four-legged land animals
- 2 1 What are vertebrates?
- 3 1 How do vertebrate numbers compare to other organisms?
- 4 Tetrapods were not the first on land
- 5 Where have early tetrapod and near-tetrapods fossils been found?
- 6 Old idea: tetrapods evolved when fish crawled out of drying ponds to find new ponds
- 7 Latimeria chalumnae - a living coelacanth
- 8 Tiktaalik roseae (2008)
- 9 Ichthyostega (East Greenland, 365 million years) hind limb
- 10 Middle Devonian tracks, Poland
- 11 An alternative view to current dogma: Ichthyostega and Acanthostega are secondarily aquatic tetrapods
- 12 When is a fish not a fish?
