(en) Conway Morris, « Middle Cambrian Polychaetes from the Burgess Shale of British Columbia », Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences, vol. 285, no 1007, , p. 227–274 (DOI10.1098/rstb.1979.0006, JSTOR2418139, Bibcode1979RSPTB.285..227M)
(en) Conway Morris, « Middle Cambrian Polychaetes from the Burgess Shale of British Columbia », Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences, vol. 285, no 1007, , p. 227–274 (DOI10.1098/rstb.1979.0006, JSTOR2418139, Bibcode1979RSPTB.285..227M)
(en) Caron, Jean-Bernard; Jackson, Donald A. (October 2006). "Taphonomy of the Greater Phyllopod Bed community, Burgess Shale". PALAIOS. 21 (5): 451–65. doi:10.2110/palo.2003.P05-070R. JSTOR 20173022, [1]
(en) Conway Morris, « Middle Cambrian Polychaetes from the Burgess Shale of British Columbia », Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences, vol. 285, no 1007, , p. 227–274 (DOI10.1098/rstb.1979.0006, JSTOR2418139, Bibcode1979RSPTB.285..227M)