Meaning of Uzma. African name. In African, the name Uzma means-greatest.The name Uzma originated as an African name. The name Uzma is most often used as a girl name or female name.
Compared to the oldest fossils ever found, though, Sue is the new kid on the block [source: Field Museum ]. Some of those ancient fossils, known as stromatolites, are more than 50 times older than Sue -- 3.45 billion years old, to be exact [source: University of Munster ].
Only hard parts, like bones and teeth, can become fossils. But for some people, the discovery raised a different question. How do scientists know the bones are really 68 million years old? Today's knowledge of fossil ages comes primarily from radiometric dating, also known as radioactive dating.