The allegedly Late Cretaceous Chthamalus darwini Bosquet, 1857: a junior synonym of extant Chthamalus stellatus (Poli, 1791) (Cirripedia, Balanomorpha, Chthamalidae)

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Abstract:

The type specimen of the allegedly Late Cretaceous (Maastrichtian) Chthamalus darwini Bosquet, 1857 from the Schneeberg, northwest of Aachen (Germany), is reevaluated and redescribed. Opinions expressed by previous authors, including Bosquet himself (between 1860 and 1863), that this did not actually represent a latest Cretaceous fossil taxon, but an extant species which must have found its way to the Schneeberg as kitchen waste, are corroborated. In fact, we hold it to be conspecific with C. stellatus (Poli, 1791), a widely distributed species on the coasts of the Atlantic and in the English Channel, the North Sea and the Mediterranean. Thus, the genus Chthamalus, and the species C. darwini, can be struck definitively from the list of Late Cretaceous cirripede taxa occurring in the Aachen area. The only sessile cirripedes found here in situ in Upper Cretaceous strata are verrucomorphans (verrucids, proverrucids) and brachylepadomorphs (brachylepadids).

Keywords: BALANOMORPHA; CHTHAMALUS; CIRRIPEDIA; LATE CRETACEOUS; RECENT; SYNONYMY

Document Type: Research Article

DOI: http://dx.doi.org/10.1127/0077-7749/2008/0249-0087

Publication date: July 1, 2008

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