Instead it is now classified as the frontal appendage of the anomalocaridid: Stanleycaris sp.
Pates, S., Daley, A.C., & Ortega-Hernández, J. (2017)
Aysheaia prolata from the Utah Wheeler Formation (Drumian, Cambrian) is a frontal appendage of the radiodontan Stanleycaris.
Acta Palaeontologica Polonica, 62:1-7 PDF LINK
Paper establishing Stanleycaris hirpex as a new genus and species:
Caron, J.B., Gaines, R.R., Mángano, M.G., Streng, M., & Daley, A.C. (2010)
A new Burgess Shale–type assemblage from the “thin” Stephen Formation of the southern Canadian Rockies.
Geological Society of America, Geology, 38(9):811-814 PDF LINK SUPPLEMENTAL PDF LINK