4 ms·
I think you're nitpicking. The good kind (good information in there) but still nitting. Developed, intellectually, culturally and so on is clearly what he meant
by Dn_Ab 14y ago
I think you're nitpicking. The good kind (good information in there) but still nitting. Developed, intellectually, culturally and so on is clearly what he meant.
Reading the wiki link, it looks like sharks do not have this feature since there was a divergence prior to this. What this says to me is they probably were water dwelling but for some reason developed lungs (a short stint on land and went on to find their true calling in the water)? Or they could have started out mostly in shallow water or spent a lot of time near the surface.
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EDIT More searching suggests that the picture is quite murky.
The swim bladder and lungs of aquatic and terrestrial organisms arose independently from a common primordial “respiratory pharynx” but not from each other...If there is commonality among these diverse respiratory processes, it is that all levels of organization, from molecular signaling to structure to function, co-evolve progressively, and optimize an existing gas-exchange framework.
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2895359/ http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2895359/
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Also, surprise is trivially true given unknown data even if it properly fits one's model since no one follows all deductions of a model to generate all data. Plus, the brain tends to compartmentalize.