Complex sentence: Stelae with this type of relief are not common in the ancient Near East however there are many close parallels between these and those produced by a variety of peoples from the Eurasian steppes between the third millennium BC and the eleventh century AD.
Split into simpler sentences: Stelae with this type of relief were not common in the ancient Near EAST. However there are a lot of close parallels produced by a variety of peoples from the Eurasian steppes between the third millennium BC and the eleventh century AD.