Not surprisingly, Rebbachisauridae has been used as garbage taxon for various bits and pieces of unidentifiable sauropod from the East End of Nowhere for the last 50 years. Its dentition doesn't seem to be arranged as a battery. The nares are on the rostrum and face forward, instead of being above the eyes, facing upward. There are no tall spines on the vertebrae, and the front legs are a bit too short. That would make more sense for North America, but it cannot be.
Diplodocoid teeth are even more extreme.
The diplodocoid occipital condyle faces ventrally, suggesting that the head was held higher and at an angle to the line of the neck. The rostrum is somewhat elongated, but seems too tall for a diplodocoid. The quadratojugal might be right for a nemegtosaur, but the basal diplodocomorph synapomorphies are absent. Again, the foliate, grooved teeth do not meet diplodocomorph specs. The anterior jaw line is unclear, but doesn't seem to be square enough.