Cambrian Explosion: more early brains (Introduction)

by dhw, Tuesday, November 10, 2015, 18:48 (1600 days ago) @ David Turell

When Strausfeld and his colleagues first examined Fuxianhuia, however, they were surprised to discover that it had a complex brain consisting of three fused segments with a rich supply of blood vessels. This brain organization closely resembles that seen in extant insect species, suggesting that the brains of certain arthropod species, such as the brine shrimp, regressed to less complex nervous systems as they evolved. The human brain is also partitioned into segments, most prominently during embryonic development, but also throughout life, and so it seems the basic ground plan for all nervous systems was laid down more than half a billion years ago, and has remained unchanged ever since." (David's bold)

David's comment: Brains are very complex, especially with eyes and optic cortex and before the Cambrian, nothing but simple sheets of cells as multicellularity began. Note my bold! Pattern planning again, surprise! For Darwin's vision theory all we have is eye spots and then full-blown eyes. How did the Ediacarans do this? Not by chance. Granted neurons had appeared before this, but not in complex networks as found in brains. Logical solution, design!

Your bold is a clear pointer to common descent, and once again fits in perfectly with different organisms varying the same pattern in accordance with their individual needs. Design, yes, but how and by what? Ah well, usual answer: an all-encompassing, 3.8-billion-year-old computer programme, your God dabbling, or the cooperative intelligence of the cell communities.


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