 At least one noasaurine, the eponymous "Noasaurus", had a large and deeply curved "sickle-shaped" claw of the hand.The diet of noasaurines is difficult to determine, with hypotheses ranging from fish to insects or other small animals.Rauhut & Carrano (2016) found only a single unambiguous trait used to diagnose noasaurines to the exception of other noasaurids.