Intelligent Design, the best explanation of Origins

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Intelligent Design, the best explanation of Origins » Theory of evolution » Tiktaalik a missing link ?

Tiktaalik a missing link ?

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1 Tiktaalik a missing link ? on Wed Sep 03, 2014 7:08 pm

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Tiktaalik , a missing link ?

http://reasonandscience.heavenforum.org/t1891-tiktaalik-a-missing-link#3161

http://www.cell-o.org/biol3306f09/ahlberg06a.pdf

Ahlberg, P.E. and Clack, J.A., Palaeontology: A firm step from water to land, Nature 440(7085):747–749, 6 April 2006 | doi:10.1038/440747a.


Of course, there are still major gaps in the fossil record. In particular we have almost no information about the step between Tiktaalik and the earliest tetrapods, when the anatomy underwent the most drastic changes, or about what happened in the following Early Carboniferous period, after the end of the Devonian, when tetrapods became fully terrestrial.



Paul Garner has a B.Sc. (Hons) in Geology and Biology and is a Fellow of the Geological Society of London, writes :

‘There are functional challenges to Darwinian interpretations. For instance, in fish the head, shoulder girdle, and circulatory systems constitute a single mechanical unit. The shoulder girdle is firmly connected to the vertebral column and is an anchor for the muscles involved in lateral undulation of the body, mouth opening, heart contractions, and timing of the blood circulation through the gills.6 However, in amphibians the head is not connected to the shoulder girdle, in order to allow effective terrestrial feeding and locomotion. Evolutionists must suppose that the head became incrementally detached from the shoulder girdle, in a step-wise fashion, with functional intermediates at every stage. However, a satisfactory account of how this might have happened has never been given.’

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