 Their fossilized remains have been found in the Solnhofen Limestone of Bavaria, Germany, the "Purbeck Group" of northeastern Germany, and the Calcaires tâchetés of eastern France.The name "Ctenochasma" was coined by the German paleontologist Christian Erich Hermann von Meyer in 1852, based on a single lower jaw full of closely packed teeth which he gave the species name "Ctenochasma roemeri".A second species, "C. gracile", was named by Oppel in 1862 based on a fragmentary skull.