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The mid-Ordovician saw the 1st cephalopods with septa solid plenty of to cope With all the pressures related to further drinking water, and could inhabit depths greater than a hundred200 m.[139] The path of shell coiling would show to generally be important to 스포츠사이트 the long run success with the lineages; endogastric coiling would only permit large dimensions to become attained which has a straight shell, While exogastric coiling initially somewhat