1. THE LOWER CAMBRIAN FOSSIL TOMMOTIA
2. S. Bengtson, 1977 .Aspects of problematic fossils in the early Palaeozoic., Acta Universitatis Upsaliensis, 415 :1 –71 .
3. S. Bengtson, 1986 .A new Mongolian species of the Lower Cambrian genus Camenella and the problems of scleritome-based taxonomy of the Tommotiidae., Paläontologische Zeitschrift, 60 :45 –55 .
4. E. Billings, 1871 .Proposed new genus of Pteropoda [Hyolithellus]., Canadian Naturalist and Geologist, 6 :240 .
5. G. C O. Bischoff, 1976 .Dailyatia, a new genus of the Tommotiidae from Cambrian strata of SE Australia (Crustacea, Cirripedia)., Senckenbergiana Lethaea, 57 :1 –33 .