Five bizarre fossil discoveries that got scientists excited
Monday, July 20, 2015 - 06:00
in Paleontology & Archaeology
From trilobites to tyrannosaurs, most fossils are of creatures with hard shells or bones. These materials don't easily biodegrade and sediment has time to build up around them and turn them into a record of the creature that is still with us millions of years after it has died. Soft-bodied organisms like worms, on the other hand, decay rapidly and their fossil record is decidedly patchy.