Every cloud has a silver lining: X-ray micro-CT reveals Orsunius rove beetle in Rovno amber from a specimen inaccessible to light microscopy

The exceptionally well-preserved and diverse insect fossil record of the Baltic amber group is a unique source for science. However, bubbles and thick layers of white gaseous froth cover numerous inclusions in this type of amber, rendering their examination with traditional light microscopy impossible. Here, we show that X-ray micro-computed tomography can be an efficient tool in such cases. We scanned a completely covered rove beetle...