1. Aksarina, N.A. and Pelman, Yu.L., Cambrian Brachiopods and Bivalve Mollusks of Siberia, Trudy Inst. Geol. Geofiz. Sib. Otd. Akad. Nauk SSSR, 1978, vol. 362, pp. 1–146.
2. Brachiopods;N.A. Aksarina,1975
3. Bell, W.Ch., Cambrian Brachiopoda from Montana, J. Paleontol., 1941, vol. 16, no. 3, pp. 193–255.
4. Berg-Madsen, V., A review of the Andrarum Limestone and the upper alum shale (Middle Cambrian) of Bornholm, Denmark, Bull. Geol. Soc. Denmark, 1985, vol. 34, pp. 133–143.
5. Brock, G.A. and Percival, I.G., Cambrian stratigraphy and faunas at Mount Arrowsmith, northwestern New South Wales, Mem. Assoc. Austral. Palaeontol., 2006, vol. 32, pp. 75–101.