Carbon dating live clam


Of the 15,000 species of bivalves known as clams, some have life cycles of only one year.

Ming's status as the world's oldest animal was confirmed using the carbon-14 dating method.A number of stories are commonly circulated about a shell, or a piece of coal, or some other sample which supposedly yielded a radiocarbon date which could not possibly be correct.Such stories misrepresent the truth and do a disservice to science and public knowlege.This thick-bodied species can weigh 75 tonnes (74 long tons; 83 short tons) to 100 tonnes (98 long tons; 110 short tons), second only to the blue whale in weight.One rare form has atoms that are 14 times as heavy as hydrogen atoms: carbon-14, or C ratio gets smaller.There is, in fact, no indication anywhere in the original reference that these samples were from the "Pennyslvanian"; nor is there any hint that they were expected to be "300 million years old"; these appear to be purely apocryphal embellishments to the original account.

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