Location: Dominican Republic Strata Layer: Oligocene Group of nice quality inclusions. Fossil inclusions in amber are the most spectacularly preserved fossils in the entire fossil record. Only rarely in the fossil record you will occasionally have soft tissue preservation. However, in amber the preservation is so extraordinary you can sometimes see every facet of the insects eye. There is an enormous degree of biodiversity preserved, providing a glimpse into past ecosystems. Amber truly is a window into the past. Amber is fossilized tree resin that when polished has gemstone qualities. The preservation of insects, plants, and other inclusions is unparalleled in the fossil record, resulting in an incredible glimpse into past ecosystems. All items guaranteed genuine.