The Appendages, Anatomy, and Relationships of Trilobites

by Percy E. Raymond

1875.—Die Stellung der Trilobiten in zoologischen Systeme. Das Ausland, 26. Jahrg., p. 2 5.

Beecher, C. E.

1893.—On the thoracic legs of Triarthrus. Amer. Jour. Sci. (3), vol. 46, pp. 367-370, 467-470, text figs. 1-3.

1894 A.—On the mode of occurrence, and the structure and development of Triarthrus becki. Amer. Geol., vol. 13, pp. 38-43, pl. 3.

1894 B.—The appendages of the pygidium of Triarthrus. Amer. Jour. Sci. (3), vol. 47, pp. 298-300, pl. 7, text fig, 1.

1895 A.—Further observations on the ventral structure of Triarthrus. Amer. Geol., vol. 15, pp. 91-100, pls. 4-5.

1895 B.—Structure and appendages of Trinucleus. Amer. Jour. Sci. (3), vol. 49, pp. 307-311, pl. 3.

1895 C.—The larval stages of trilobites. Amer. Geol., vol. 16, pp. 166-197, pls. 8-10.

1896 A.—The morphology of Triarthrus. Amer. Jour. Sci. (4), vol. 1, pp. 251-256, pl. 8; Geol. Mag., dec. 4, vol. 3, pp. 193-197, pl. 9.

1896 B.—On a supposed discovery of the antennas of trilobites by Linnæus in 1759. Amer. Geol., vol. 17, pp. 303-306, text figs. 1-3.