Lomekwian stone tools, dating to approximately 3.3 million years ago, represent a more primitive percussive technology that is distinct in manufacture and variability from the later Oldowan techno-complex.
The retrieved papers consistently distinguish the earlier Lomekwian stone tool industry (such as from Lomekwi 3 at 3.3 Ma) from the later Oldowan assemblages starting around 2.6 Ma, highlighting differences in manufacture, systematic flaking, and technological variability. There are no papers contradicting this distinction.