1. On the mode of occurrence, structure and development of Triarthrus;Beecher C.E.;Amer. Geol.,1894
2. Further observations on the ventral structure of Triarthrus;Beecher C.E.;Amer. Geol.,1895
3. The larval stages of trilobites;Beecher C.E.;Amer. Geol.,1895
4. The morphology of Triarthrus;Beecher C.E.;Amer. J. Sci., Ser. 4,1896
5. Outline of a naturai classification of trilobites;Beecher C.E.;Amer. J. Sci., Ser. 4,1897