LOBE FINNED FISH

About of LOBE FINNED FISH









The Red Hill Story

  • . It is commonlyknown as the Age of Fishes
  • . The Devonian Age saw a rapiddiversification of fishes
  • . It was dominated by reef builders and then thefirst jawed fish followed by the lobe-finned fish and eventually the firsttetrapods
  • . The transition between fish and tetrapods has been an important focusof study in paleontology
  • . In the 1950's, Alfred Sherwood Romer suggestedthat tetrapods evolved from lobe-finned fishes that, during drought, wouldscramble over land to find new bodies of water
  • . Fossils of lobe-finned fish showed earlyindications of fins turning into limbs
  • . Ichthyostega and Acanthostega (Eastern Greenland) were half fish, half tetrapod
  • . Other important finds at Red Hill include Hyneria Lindae , a huge (13 ft.) predatory fish, placoderms, ray-finned fishes, sharks, anda host of Devonian plants and terrestrial invertebrates (spiders and scorpions)



    Sarcopterygii
    A description of the lobe-finned fish which first appeared in the early Devonian and had mostly died out by the end of the period.




    Pandas and People: A Brief Critique
  • . For example, on pages 99-100 the authors of Pandas have written: "Intelligent design means that various forms of life began abruptly through an intelligent agency, with their distinctive features already intact - fish with fins and scales, birds with feathers, beaks, and wings, etc
  • . The earliest known fish, for example, were quite different from the fish we recognize today
  • . The earliest fossil forms lacked many of the characteristics possessed by fish today, including jaws, paired limbs and bony internal skeletons, and yet Pandas wishes to tell students that fish (and all fossil forms) appear in the fossil record "with their distinctive features intact." To take another example, strong fossil evidence indicates that the first land vertebrates evolved from lobe-finned fish
  • . No other amphibian possesses internal gills, and the gills preserved in key Acanthostega fossils make it clear that Acanthostega could breathe with its gills underwater, just like a fish, and could also breathe on land, using lungs






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