Hescheleria is an extinct genus of thalattosaurian marine reptile from the Middle Triassic (247.2 to 235 Ma) of Monte San Giorgio in Switzerland.

[1] Like other thalattosaurs, Hescheleria has a slender lizard-like body with a long paddle-shaped tail.

This forms a toothy hook at almost a right angle to the rest of the jaw, with a large diastema.

The mandible is considerably robust and is dotted with small sharp teeth, along with a pair of pointed conical projections towards the tip, the function of which is unknown.

Other paleontologists disagree with this hypothesis,[2] arguing that the projections do not occlude against any other potential crushing surface in the jaws, instead making contact with the rostral diastema.