For fossil verrucid barnacles, the name Verruca withersi appears to have been used twice; Schram & Newman described material from the Albian-Cenomanian (Cretaceous) of Colombia, while Kruizinga had previously recorded a new species from the Pleistocene(?) or perhaps younger strata of Sumba (Indonesia). We do not consider V. withersi Schram & Newman to be a cirripede, therefore no replacement name is needed for this junior synonym. Verruca withersi Kruizinga is a valid species related to the extant V. cookei.

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Scripta Geologica

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Naturalis journals & series

Jagt, J., & Buckeridge, J. S. (2005). A case of homonymy in fossil verrucid barnacles: Verruca withersi (Crustacea, Thoracica). Scripta Geologica, 130, 187–189.