Johann Wolfgang von Goethe, the German literary giant who died in 1832, never knew that one of his amber specimens contained a 40-million-year-old ant. Scientists using synchrotron micro computed tomography have now revealed three fossil insects hidden inside two pieces of unpolished amber from his personal collection, including an extinct ant preserved in extraordinary detail.
A writer’s forgotten rocks held living time capsules
Goethe’s amber collection, now housed at the Goethe National Museum and managed by the Klassik Stiftung Weimar in Germany, contains 40 pieces of Baltic amber. Two of those pieces had never been polished, making their contents nearly invisible to the naked eye. Researchers from the University of Jena decided to take a closer look. They brought the specimens to the German Electron Synchrotron (DESY) in Hamburg, where they used advanced 3D scanning technology to peer inside the fossilized tree resin. The scans revealed three insects: a fungus gnat, a black fly, and an ancient ant.
A common amber fossil becomes a rare scientific window
The ant belongs to the extinct species Ctenobethylus goepperti, a type of insect that appears frequently in Baltic amber. But this specimen is different. Because the amber was never polished or cut, the ant remained exceptionally well preserved. The scans showed fine body hairs on the worker ant and allowed researchers to see internal skeletal structures inside its head and thorax. Those details had never been documented so clearly before. The team also created a complete digital 3D reconstruction of the fossil, which they made available online for other scientists to study and compare.
Researchers compared the ancient ant to the modern genus Liometopum, which lives today in North America and warmer parts of Europe. Those comparisons suggest the extinct species likely built large nests in trees. That behavior may explain why the ants are so often found trapped in amber, since tree resin would have dripped directly onto their nests.
What a poet’s hobby now tells science
Goethe collected amber as part of his broader interest in natural history, but he never saw what lay inside these two pieces. More than 190 years after his death, modern imaging technology has turned his forgotten specimens into a source of new biological knowledge. The discovery shows that even well-studied fossil collections can still hold surprises when examined with fresh tools. The ant’s preserved internal structures offer a clearer picture of life in ancient forests, and the open-access 3D model gives paleontologists around the world a new reference point for identifying similar fossils.
