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Vertebrate Evolution: Lobe-Finned Fishes and Lungfishes

Explore the evolutionary journey of vertebrates with lobe-finned fishes and lungfishes, their unique characteristics and shared ancestry with tetrapods.

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Vertebrate Evolution: Lobe-Finned Fishes and Lungfishes

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  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.

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