A review of the brachylepadomorph cirripede genus Pycnolepas, including the first record of an Early Cretaceous species from the Russian Far East *
Author
Jagt, John W. M.
Author
Zonova, Tatiana D.
Author
Jagt-Yazykova, Elena A.
text
Zootaxa
2007
1545
33
47
journal article
10.5281/zenodo.177977
68d70702-9696-4c34-8197-83f16ce26020
1175-5326
177977
Pycnolepas
fimbriata
(
Withers, 1912
)
Original description.
Withers (1912
: 506, pl. 23, fig. 1a, b, as
Brachylepas
(?)
fimbriatus
) [see also
Withers 1928
: 91, pl. 12, figs 9–12].
Type
.
Holotype
is a carina in the M. Remeš Collection (Olomouc), an ‘electrotype’ of which is NHM I.15818.
Locality and stratigraphy.
Stramberg (= Štramberk), Moravia (
Czech Republic
); Red Limestone, Tithonian (141–135 Ma).
Remarks.
The single carina known of
P
.
fimbriata
is semicylindrical, strongly convex transversely, noncarinate and comparatively small (length c.
13 mm
), with a near-straight basal margin; ornament consists of regularly spaced, prominent, transverse and rounded longitudinal ridges. Two other capitular valves have been referred to this species, albeit with a query. One is a fragmentary tergum (
Withers, 1928: pl. 12, fig. 11; Red Limestone, Nesselsdorf = Koprivnice
), with a straight apicobasal ridge; the other a fragmentary?rostrum (
Withers, 1928: pl. 12, fig. 12
). In the absence of other valves, assignment to
Pycnolepas
must remain tentative;
Withers (1928: 93)
noted a general resemblance to the carina of
P
.
rigida
.
Occurrence.
Known only from the Red Limestone (Tithonian) of Štramberk and Koprivnice, Moravia (
Czech Republic
); no subsequent records.