†family Siphusauctidae O’Brien and Caron 2012
Full reference: L. J. O’Brien and J. B. Caron. 2012. A new stalked filter-feeder from the Middle Cambrian Burgess Shale, British Columbia, Canada. PLoS ONE 7(1):e29233-1-e29233-21
Parent taxon: Bilateria according to L. J. O’Brien and J. B. Caron 2012
Sister taxa: Acoelomorpha, Dickinsoniomorpha, Eubilateria, Ikaria, Rhombocorniculum
Subtaxa: Siphusauctum
Distribution:
• Delamaran of Canada (1: British Columbia collection)
• Cambrian of United States (1: Utah)
Total: 2 collections each including a single occurrence