Vol. s4-40, Issue 238, 1915October 01, 1915 EDT
The Mammals and Horned Dinosaurs of the Lance Formation of Niobrara County, Wyoming
The Mammals and Horned Dinosaurs of the Lance Formation of Niobrara County, Wyoming
Richard Swann Lull,
Lull, R. S. (1915). The Mammals and Horned Dinosaurs of the Lance Formation of Niobrara County, Wyoming. American Journal of Science, s4-40(238), 319–348. https://doi.org/10.2475/ajs.s4-40.238.319