Drepanaspis gemuendenensis is an extinct species of primitive jawless fish from the Devonian Hunsruck lagerstatte. It was a flattened creature with a heavily armored body, somewhat ray-like in appearance. Its mouth faced upwards, unlike most other Heterostracans, which had downward-facing mouths. Drepanaspis also had small, widely spaced eyes. It is presumed to have foraged the ocean floor for food.