The Appendages, Anatomy, and Relationships of Trilobites

by Percy E. Raymond

1895 A.—The zoological position of the trilobites. Science Prog., vol. 4, pp. 33-49.

1895 B.—Supplementary notes on the systematic position of the trilobites. Quart. Jour. Geol. Soc., London, vol. 51, pp. 352-360, figs. A-C.

Beyrich, E.

1846.—Untersuchungen ueber Trilobiten. 2. Stück, p. 30, pl. 4, fig. 1c.

Billings, E.

1870.—Notes on some specimens of Lower Silurian trilobites. Quart. Jour. Geol. Soc., London, vol. 26, pp. 479-486, pls. 31-32. Abstract in Geol. Mag., vol. 7, p 291, and Nature, vol. 2, p. 94.

Brongniart, A.

1822.—Histoire naturelle des crustacés fossiles. Paris.

Brünnich, F. E.

1781.—Beskrivelse over trilobiten, en dyreslaegt og dens arter, med en ney arts aftegning. Nye Samlig of det Kong. Danske Vidensk. Selskabs. Skriften, Copenhagen.