Reeve, L. A. (1856). Monograph of the genus Spondylus. In: Conchologia Iconica, or, illustrations of the shells of molluscous animals, vol. 9, pl. 1-18 and unpaginated text. L. Reeve & Co., London. [stated dates: pl. 1-4, January 1856; pl. 5-8, February 1856; pl. 9-14, May 1856; pl. 15-18, June 1856].
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Reeve, L. A.
1856
Monograph of the genus <i>Spondylus</i>. In: <i>Conchologia Iconica, or, illustrations of the shells of molluscous animals</i>, vol. 9, pl. 1-18 and unpaginated text. L. Reeve & Co., London. [stated dates: pl. 1-4, January 1856; pl. 5-8, February 1856; pl. 9-14, May 1856; pl. 15-18, June 1856]
In: Reeve, L. A. (Ed.), 1843-1878, Conchologia Iconica; or illustrations of the shells of molluscous animals, vol. 9. [unnumbered pages], pls. 1-18. London