Squalicorax falcatus

Squalicorax falcatus is an extinct genus of crow shark.

Fossils
The teeth of Squalicorax falcatus are small to medium in size, and tend to increase in size from the bottom to the top of the Smoky Hill Chalk. The teeth are generally triangular in side view, with the crowns of the anterior teeth narrow and erect. The lateral and posterior teeth have lower crowns that are inclined distally. The angle of the cusp is acute to obtuse, and all

cutting edges are finely serrated. The root is intermediate in length and bilobate, without a nutrient groove.