Pollicipes tithonica, (Withers, 1912)

Jagt, John W. M., Zonova, Tatiana D. & Jagt-Yazykova, Elena A., 2007, A review of the brachylepadomorph cirripede genus Pycnolepas, including the first record of an Early Cretaceous species from the Russian Far East *, Zootaxa 1545, pp. 33-47 : 35

Pycnolepas tithonica ( Withers, 1912)

Original description. Withers (1912: 506, pl. 23, fig. 2a, b, as Brachylepas (?) tithonicus) [see also Withers 1928: 92, pl. 12, figs 13, 14].

Type. Holotype is a carina in the M. Remeš Collection (Olomouc), an ‘electrotype’ of which is NHM I.15819.

Locality and stratigraphy. Štramberk, Moravia ( Czech Republic); White Limestone (Tithonian, 141– 135 Ma).

Remarks. The single carina known of P. tithonica is semicylindrical, strongly convex transversely with steeply inclined sides, non-carinate and comparatively large (length [estimated] 27 mm); ornament consists of regularly spaced, sharp-edged and straight transverse ridges; lacking longitudinal ridges and interspaces smooth. No other capitular valves are known. So far as no other valves and/or imbricating plates are known, assignment to Pycnolepas must remain tentative; Withers (1928: 93) noted that there was some resemblance to carinae of Brachylepas fallax ( Darwin, 1851) .

Occurrence. Known only from the type locality; no subsequent records.