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1 record found in the Index Nominum Genericorum database.

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Diacritical Conversion

Williamsonianthus R. Kräusel et F. Schaarschmidt, Schweiz. Paläontol. Abh. 84: 22. 1966.
T.: W. keuperianus R. Kräusel et F. Schaarschmidt
Stem with male flowers; Triassic (Keuper); Neuewelt near Basel, Switzerland.
FOSSIL-GYMNOSPERMAE-BENNETTITINAE (103) 9 Feb 1996

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