Summary The following fossil‐genus name is recommended for conservation: Thaumatopteris Göppert with a conserved type. The following two fossil‐species names are recommended for conservation: Xenikoon australis Cookson & Eisenack with a conserved type, Odontopteris schlotheimii Brongn. against Osmunda nummularia Sternb. The following fossil‐variety name is recommended for conservation: Lithodinia jurassica var. ornata Eisenack ( Ctenidodinium ornatum (Eisenack) Deflandre) with a conserved type.
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Patrick S. Herendeen (2026) studied this question.
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