Morton, S.G. 1836. Being a notice and description of the organic remains embraced in the preceding paper. American Journal of Science and Arts 29: 149-154. Available electronically.
Morton, 1836. Amer. J. Sci. 29: 149, pl. 1, figs. 22-23.
Morton, 1836. Amer. J. Sci. 29: 149.
Morton, 1836. Amer. J. Sci. 29: 149.
Morton, 1836. Amer. J. Sci. 29: 149.
Morton, 1836. Amer. J. Sci. 29: 149.