The INTERNATIONAL FOSSIL PLANT NAMES INDEX
Global registry of scientific names of fossil organisms covered by the International Code of Nomenclature for Algae, Fungi, and Plants and the International Code of Zoological Nomenclature © 2014-2025

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Total: 70473

species valid

Rhus nigricans (Lesq.) Knowlt. Profess. Pap. U.S. Geol. Surv., 131(F): 168. 30 Mar 1923

species valid

Rhus variabilis (Newb.) Knowlt. Profess. Pap. U.S. Geol. Surv., 131(F): 167. 30 Mar 1923

species valid

Planera inaequilateralis (Lesq.) Knowlt. Profess. Pap. U.S. Geol. Surv., 131(F): 161. 30 Mar 1923

species valid

Juglans winchesteri Knowlt. Profess. Pap. U.S. Geol. Surv., 131(F): 160. 30 Mar 1923

species valid

Comptonia anomala Knowlt. Profess. Pap. U.S. Geol. Surv., 131(F): 158. 30 Mar 1923

species unavailable

Salix longiacuminata Knowlt. Profess. Pap. U.S. Geol. Surv., 131(F): 155. 30 Mar 1923

species valid

Salix longiacuminata Knowlt. ex R.W. Br. Profess. Pap. U.S. Geol. Surv., 185(C): 54. Dec 1934

species valid

Pontederites hesperius Knowlt. Profess. Pap. U.S. Geol. Surv., 131(F): 154. 30 Mar 1923

species valid

Geonomites haydenii (Newb.) Knowlt. Profess. Pap. U.S. Geol. Surv., 131(F): 152. 30 Mar 1923

species valid

Cyperacites haydenii (Lesq.) Knowlt. Bull. U.S. Geol. Surv., (152): 83. Oct 1898