Eoabelisaurus is a new genus of jurassic abelisaurid. It is the oldest one and shows how abelisaurs arms have developed. It has arms that were short, but longer than the ones of later forms like majungasaurus or carnotaurus. Eoabelisaurus, meaning dawn abelisaurus , was around 6,5 metres long and lived in south america. The animal is known from a nearly complete skeleton.