Halwaxiida or halwaxiids is a proposed clade equivalent to the older orders Sachitida He 1980 and Thambetolepidea Jell 1981, loosely uniting scale-bearing Cambrian animals, which may lie in the stem group to molluscs or lophotrochozoa. Some palaeontologists question the validity of the Halwaxiida clade.
Read more about Halwaxiida: Definition and Members, Ecology, Suggested Phylogenies, Decline, Wiwaxia and Odontogriphus, Halkieriids and Siphogonotuchids