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: 69433

species valid

Helminthoida crassa Schafh. ex Heer Fl. Foss. Helvet., (4): 167. 1877

species valid

Helminthoida appendiculata Heer Fl. Foss. Helvet., (4): 168. 1877

species valid

Helminthoida labyrinthica Heer Fl. Foss. Helvet., (4): 168. 1877

species unavailable

Helminthoida labyrinthica Heer Urwelt Schweiz, (3-11): 246. 25-26 Aug 1864

species unavailable

Helminthoida crassa Schafh. Geogn. Untersuch. Bayer. Landen, (1): 142. 13 Feb 1851

species unavailable

Helminthoida irregularis Schafh. Geogn. Untersuch. Bayer. Landen, (1): 142. 13 Feb 1851

species valid

Pecopteris acuminata Schafh. Geogn. Untersuch. Bayer. Landen, (1): 141. 13 Feb 1851

species valid

Muensteria annulata Schafh. Geogn. Untersuch. Bayer. Landen, (1): 140. 13 Feb 1851

species valid

Gilbertina spiralis E.O. Ulrich Harriman Alaska Exped., 4: 141. 18 Feb 1904

species valid

Gyrodendron emersonii E.O. Ulrich Harriman Alaska Exped., 4: 140. 18 Feb 1904