A fossil braincase from Lo Hueco was tentatively assigned to an unnamed species of "Ampelosaurus", "A." sp., in a 2013 article in the journal PLoS ONE. The braincase was found to share many features with "A. atacis", such as a back of the skull that is flat. The braincase, MCCM-HUE-8741, is small in size overall, with a front-to-back length of , and the maximum width of the left half being . Parts of the bottom half of the braincase are missing. Even though section are missing, the specimen does not appear to have been deformed much, as the left and right halves are not very different.