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: 68448

species valid

Williamsonia artemovae Sixtel Trudy Tashkentsk. Gos. Univ., New Series, (176 (13) [1960]): 92. 8 Jul 1961

species valid

Williamsonia kazachstanica Turut.-Ket. Trudy Bot. Inst. Akad. Nauk SSSR, Ser. 8, Paleobot., (4): 19. 12 Feb 1963

species valid

Williamsonia pacifica Krysht. in Krysht., Prynada Izv. Glavn. Geol.-Razved. Ob'edin., 51(22): 371. 1932

species valid

Williamsonia philatovii Turut.-Ket. Trudy Bot. Inst. Akad. Nauk SSSR, Ser. 8, Paleobot., (4): 21. 12 Feb 1963

species valid

Williamsonia prynadae Turut.-Ket. Trudy Bot. Inst. Akad. Nauk SSSR, Ser. 8, Paleobot., (4): 22. 12 Feb 1963

species valid

Williamsonia samylinae Turut.-Ket. Trudy Bot. Inst. Akad. Nauk SSSR, Ser. 8, Paleobot., (4): 23. 12 Feb 1963

species valid

Williamsonia subtilis Turut.-Ket. Trudy Bot. Inst. Akad. Nauk SSSR, Ser. 8, Paleobot., (4): 24. 12 Feb 1963

species valid

Williamsonia turkomanica Turut.-Ket. Trudy Bot. Inst. Akad. Nauk SSSR, Ser. 8, Paleobot., (4): 24. 12 Feb 1963

species valid

Williamsoniella elegans Turut.-Ket. Trudy Bot. Inst. Akad. Nauk SSSR, Ser. 8, Paleobot., (4): 32. 12 Feb 1963

species valid

Williamsonia pusilla T. Halle Wiss. Ergebn. Schwed. Südpol.-Exped. 1901-1903, 3(14): 70. 22 Jan 1913