Vol. 274, Issue 1, 1974January 01, 1974 EDT
The Hirnantian Fauna of the Perce Area (Quebec) and the Ordovician-Silurian Boundary
The Hirnantian Fauna of the Perce Area (Quebec) and the Ordovician-Silurian Boundary
Pierre J. Lesperance,
Lesperance, P. J. (1974). The Hirnantian fauna of the Perce area (Quebec) and the Ordovician-Silurian boundary. American Journal of Science, 274(1), 10–30. https://doi.org/10.2475/ajs.274.1.10