Taxon: ***Steneosaurus gracilirostris* Westphal, 1961** - **Teleosaurid**
**Time period**: [Lower Toarcian, *Harpoceras falciferum* biozone](https://en.wikipedia.org/wiki/Toarcian) (183 million years ago)
**Collection location: **[Dudelange, Luxembourg](https://www.openstreetmap.org/search?query=Dudelange%2C%20Luxembourg#map=13/49.4800/6.0878)
**MnhnL collection number:** TU515
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.
This specimen is discribed in a scientific publication: [A catalogue of teleosauroids (Crocodylomorpha: Thalattosuchia) from the Toarcian and Bajocian (Jurassic) of southern Luxembourg](https://www.mnhn.lu/science/2018/01/29/a-catalogue-of-teleosauroids-crocodylomorpha-thalattosuchia-from-the-toarcian-and-bajocian-jurassic-of-southern-luxembourg/?lang=en)