Eocene Baltic Forest. A sub-tropical forest scene during the Paleogene of Europe, showing resin oozing from gymnosperm barks. The giant flightless bird is a Diatryma. Nearby are two early horse-related animals, Propalaeotherium. The lemur-like animal sitting on a branch at top left is a Europolemur. All insects shown in this scene have been found preserved in amber. The main insect is a rock crawler also known as heel walker (Mantophasmid). The clump of resin near the centre of the image contains a praying mantis caught in the sticky resin. Flying above are two damselflies (Zygoptera). Midges (Diptera) at lower left and mayflies (Ephemeroptera) near the base of the tree on the right. Resting on the tree trunk is a butterfly (Lepidoptera) and a true bug (Hemiptera).