0.4" (0.99 cm) Masiakasaurus tooth from the Maevarano Formation from the Mahajanga Basin, Madagascar. 70 to 65 million years old. 

This tooth has 25 serrations per 5 mm on the mesial carinae, and lacks interdenticular sulci on the distal serrations. These two factor show that this took is in fact, Masiakasaurus.