The Appendages, Anatomy, and Relationships of Trilobites

by Percy E. Raymond

1910.—On two new trilobites from the Chazy near Ottawa, Ontario. Ottawa Nat., vol. 24, pp. 129-134, pl. 2.

1917.—Beecher's classification of trilobites, after twenty years. Amer. Jour. Sci. (4), vol. 43, pp. 196-210, text figs. 1-3.

Raymond, P. E., and Barton, D. C.

1913.—A revision of the American species of Ceraurus. Bull. Mus. Comp. Zool., vol. 54, pp. 525-543. pls. 1, 2, 3 text figs. 1-3.

Reed, F. R. C.

1916.—The genus Trinucleus. Pt. 4. Geol. Mag., dec. 6, vol. 3, pp. 121, 122.

Richter, R.

1848.—Bitrag zur Palæeontologie des Thüringer Waldes. Dresden and Leipzig.

Ringueberg, E. N. S.