Halwaxiida
| Halwaxiida Temporal range: | |
|---|---|
| Halkieria sp. | |
| Scientific classification | |
| Kingdom: | |
| Superphylum: | |
| (unranked): | Halwaxiida |
| Families | |
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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.