'Blood amber' may be a portal into dinosaur times, but the fossils are an ethical minefield for palaeontologists

The discovery of a dinosaur tail entombed in amber at a market in Myanmar near the Chinese border grabbed headlines in 2016.

(CNN)When it comes to dinosaurs, many of us think of towering skeletons dominating the atriums of the world's great natural history museums.

But it's the tiniest fossils that have transformed paleontology over the past five years.
Some of the field's most extraordinary discoveries have come from amber: A dinosaur tail, parts of primitive birds, insects, lizards and flowers have all been found entombed in globs of 100 million-year-old tree resin.
    They offer a tantalizing, three-dimensional look at dinosaur times. The vivid creatures and plants look like they just died yesterday with soft tissue in place and details like skin, coloring, feathers, teeth, leaves and petals exquisitely preserved -- details that are often lost in the crush of fossils formed in rock.
      But this treasure comes with baggage.

      Richest deposits are in a country marred by civil war

      Amber is found in several places around the world, but amber deposits dating from the time before dinosaurs went extinct are rare. Some of the richest deposits have been found in Myanmar's Kachin State, in the northern part of the country, near the border of China. Government forces and ethnic minorities have fought in this region for years.
      In 2017, Myanmar's military, which stand accused of genocide against the Rohingya ethnic group in the west of the country, began seizing control of the amber mines from the indigenous Kachins, adding to the strife.