Hypsamasia is an extinct embrithopod mammal that lived during the middle Eocene.

[1] Dental remains of this herbivore[2] have been found in the Kartal Formation near the village Saribeylar (40°06′N 32°42′E / 40.1°N 32.7°E / 40.1; 32.7, paleocoordinates 38°12′N 28°12′E / 38.2°N 28.2°E / 38.2; 28.2)[3] north of Ankara in what is today Anatolia.

[1] Hypsamasia seni was named in reference to its high crowned cheek teeth (Greek: hypsos, "height"), the type locality (the Roman town and province Amasya), and after Dr Sevket Sen for his important contribution to the paleontology and geology of western Asia.

[4] Hypsamasia differs from Palaeoamasia in its larger size and the highly crowned teeth.

Other, unnamed embrithopods have been found in the Kartal Formation.