Here's some from anatomically modern humans:
http://www.culture.gouv.fr/culture/arcn ... /st-dt.jpg
French Ministry of culture Lascaux site
The sculpture from our own species is more than some crude scratches on rock which might indicate a human figure; the Lespugue "venus" is finely detailed and highly stylized, showing a very sophisticated artistic tradition.
http://www.arthistory.sbc.edu/imageswom ... efront.jpg
"Women in Prehistory" - Christopher Whitcombe
Unless you are a skilled artist you could not match this one. But almost any human alive today could easily do better than the rock presented as Neandertal art.
If it is Neandertal art, it provides further evidence for my argument that there was something qualitatively different between their species and ours.