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: See my shark-tooth photos here.