Taxon: ***Stenopterygius quadriscissus *(Quenstedt, 1856)** - **Ichthyosaur**
**Time period**: [Lower Toarcian, *Harpoceras falciferum* biozone](https://en.wikipedia.org/wiki/Toarcian) (183 million years ago)
**Collection location: **[Schouweiler, Gare, Luxembourg](https://www.openstreetmap.org/search?query=Schouweiler#map=15/49.5780/5.9614)
**MnhnL collection number:** TU664
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.