Peculiar Saharan Rock Art Animal

While researching the recent FOA article on Saharan rock art I came upon this tracing of an unidentified animal at the Tasilli in the middle of the Sahara. This outline is redrawn from the photograph on Wikipedia at: http://en.wikipedia.orgwikiFileAfrican_cave_paintings.jpg

This is an outline made from the Wikipedia article to serve as clip art.

It seems the outline suggested a "Dinosaur" to an observer and it was then stated to represent the Mokele-mBembe. That is possible, but if I might suggsest, it seems to me to be a composite merging of two different African Water-Monsters, and the top parts resemble a "Serpopard":