Usually, these findings build on each other, but Lucy's discovery in 1974 broke the mold, HISTORY reported. The 3.2 million-year-old fossil brought another species into the scheme of things and ...

A marine animal snacked on some sea lilies that did not agree with its stomach—and we now know what happened next ...

If an external mold later fills with sediment or minerals, it can form a cast. Trace fossils are other kinds of evidence that an organism existed. Trace fossils include tracks, trails and footprints; ...

Fossils can be broadly divided into body fossils and trace ... of recrystalization in substances like old honey or maple syrup. In the Kits: #3: Brachiopod Molds - Sometimes after an organism gets ...

A 555-million-year-old fossil found in South Australia provides ... the sediment covered and compressed these communities, forming a mold of their ancient ecosystem. “Imagine pouring concrete ...