A specimen of a shark tooth from the genus Acrodus (Acrodus cf. lateralis). From the Upper Muschelkalk (Middle Triassic, Ladinian) deposits of Upper Silesia. Relatively unusually, the tooth has a preserved root.

A beautifully preserved tooth crown from Acrodus sp.. The root is missing, suggesting it was much less durable than the crown itself. In fact, these occasionally broken (though still recognizable) crowns are often the only identifiable elements in the “fishy mess” of vertebrate remains I encounter.