Myllokunmingia is a genus of basal chordate from the Lower Cambrian Maotianshan shales of China, thought to be a vertebrate, although this is not conclusively proven. It is 28 mm long and 6 mm high. It is among the oldest possible craniates, found in the lower Cambrian Chengjiang (520 million years ago). It appears to have a skull and skeletal structures made of cartilage. There is no sign of biomineralization of the skeletal elements. There is only one specimen, which has the tip of the tail buried in sediment. Only one species is known – Myllokunmingia fengjiaoa (Shu, Zhang & Han).