Burgess Shale” (英語). burgess-shale.rom.on.ca. 2021年7月18日閲覧。 ^ a b c d e f g h i j k l m n o CONWAY MORRIS, S. 1977. A new metazoan from the Burgess Shale
C; Collins, Desmond H (2006-06-01). “A new study of Marrella splendens (Arthropoda, Marrellomorpha) from the Middle Cambrian Burgess Shale, British Columbia