D. W.  Boyd and Newell, N. D., ?Permian pelecypods from Tunisia?, American Museum Novitates, vol. 2686, pp. 1-22, 1979.

D. W.  Boyd and Newell, N. D., ?Silicified Leptodesma (Bivalvia; Pteriomorphia) from the Texas Permian?, American Museum Novitates, vol. 3347, pp. 1-10, 2001.

D. W.  Boyd and Newell, N. D., ?Silicified Leptodesma (Bivalvia; Pteriomorphia) from the Texas Permian?, American Museum Novitates, vol. 3347, pp. 1-10, 2001.