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The mid-Ordovician saw the 1st cephalopods with septa solid ample to cope Using the pressures related to further drinking water, and could inhabit depths bigger than one hundred200 m.[139] The path of shell coiling would prove to generally be critical to the future success with the lineages; endogastric 스포츠사이트 coiling would only permit large dimensions for being attained with a straight shell, While exogastric coiling initially somewhat