It was a flattened creature with a heavily armored body, superficially ray-like in appearance. Its mouth faced upwards which had downward-facing mouths. Drepanaspis also had small, widely spaced eyes. It is presumed to have forged the ocean floor for food.
This frying-shaped shaped fish may have been the ancestor of the giant, meter-long, meter-wide of the Devonian late.
This fish made a brief appearance in "Animals Armageddon" (episode 2: Hell on Earth) and is mistakenly confused by Bothriolepis.