Taxon: ***Aptychus *von Meyer, 1831**
**Time period**: [Toarcian ](https://en.wikipedia.org/wiki/Toarcian) (182.7 to 174.1 million years ago)
**Collection location: **[Sanem, Luxembourg](https://www.openstreetmap.org/#map=16/49.5411/5.9457)
**MnhnL collection number:** TV791
The original specimen of this fossil is kept at the palaeontological collection of the [Luxembourg National Museum of Natural History (MnhnL)](https://www.mnhn.lu/) in Luxembourg.