Note 34 — Chapter IV
Reading edition
Ward, L. F. Status of the Mesozoic Floras of the United States. Monograph 48, U. S. Geol. Surv. 1905.
Reading edition
Ward, L. F. Status of the Mesozoic Floras of the United States. Monograph 48, U. S. Geol. Surv. 1905.