1. Comparative hydrodynamic stability of brachiopod shells on current-scoured arenaceous substrates
2. M. G. Bassett, and L. R M. Cocks .1974 .A review of Silurian brachiopods from Gotland., Fossils and Strata, 3 :1 –56 .
3. E. Billings, 1862 .New species of fossils from different parts of the Lower, Middle, and Upper Silurian rocks of Canada., Geological Survey of Canada, Palaeozoic Fossils, 1 /4 :96 –168 .
4. D. Brice, 1981 .Les brachiopodes Pentamerida, Rhynchonellida et Terebratulida., Mémoires de la Société géologique de Bretagne, 24 :193 –217 .
5. L. R M. Cocks, 1979 .A silicified brachiopod fauna from the Silurian of Iran., Bulletin of British Museum of Natural History (Geology), 32 :25 –42 .