Coelacanths were once thought to have undergone extinction 66 million years ago during the Cretaceous–Paleogene extinction event. ... The fossil record is unique because coelacanth fossils were found 100 years before the first live specimen was identified.
<span>The answer is glucose which has the formula C6H12O6. With carbon present in glucose, it is termed an "organic" compound. None of the other examples have any carbon in them.</span>
