Hofmann, Hans J. (1988)۔ "An alternative interpretation of the Ediacaran (Precambrian) chondrophore Chondroplon Wade"۔ Alcheringa۔ 12 (4): 315–318۔ doi:10.1080/03115518808619130
Hofmann, Hans J. (1988)۔ "An alternative interpretation of the Ediacaran (Precambrian) chondrophore Chondroplon Wade"۔ Alcheringa۔ 12 (4): 315–318۔ doi:10.1080/03115518808619130