[![enter image description here][1]][1]

**Lenght: 10 mm, striated, circular cross-section**

**Site: Brno-Hády (limestone quarry), Moravia, Czech republic, central Europa**

**Age: Jurassic, oxford**

The site is a good source of fossil shark teeth, but this tooth I am wondering about has absolutely different structure and does not have as strong luster as shark teeth have. 

An example of shark tooth fossil from Brno-Hády site:
[![enter image description here][2]][2]
[See my shark-tooth photos here][3]. 


  [1]: https://i.sstatic.net/RJZW9.jpg
  [2]: https://i.sstatic.net/F2Zqh.jpg
  [3]: https://www.flickr.com/photos/violetplanet/26006990296/in/album-72157665693696130/