Question: Which of these are reasons why the use of the term "living fossils" is problematic? It was a term coined by Darwin Studies based on DNA of living fossils have shown that they are not evolving The fossil record only preserves some features and we don't know how much other features have changed in living fossils The fossil record is usually very complete, so we can be sure a lineage hasn't changed back and forth over long time spans. Need Assignment Help?