Vol. s4-40, Issue 240, 1915December 01, 1915 EDT
A New Cephalopod From the Silurian of Pennsylvania
A New Cephalopod From the Silurian of Pennsylvania
Ruth Raeder Mook,
Mook, R. R. (1915). A New Cephalopod From the Silurian of Pennsylvania. American Journal of Science, s4-40(240), 617–620. https://doi.org/10.2475/ajs.s4-40.240.617