| Name | Williamsoniaceae |
| Authorship | |
| Rank | Family |
| Placed in | Life |
| Contains | Bennettitanthus A.I.Turutanova-Ketova Cycadocephalus Nathorst Lyssoxylon Daugherty Nilssoniopteris A.G.Nathorst Otopteris Lindley & W.Hutton Otozamites C.F.W.Braun Pterophyllum A.T.Brongniart Taeniozamites T.M.Harris Weltrichia C.F.W.Braun Williamsonia W.Carruthers Zamites A.T.Brongniart |
| Remarks | [imported from GBIF] |
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