Gastropods from the Cretaceous-Palaeogene boundary in Denmark
Author
Hansen, Thomas
text
Zootaxa
2019
2019-08-12
4654
1
1
196
journal article
26049
10.11646/zootaxa.4654.1.1
9ce1d103-9234-4fbe-9544-f1c294bb8783
1175-5326
3365803
CFD82CC0-3110-472E-972B-7ADC0C523A04
Polinices
? sp. B
Figs 25
O–P
2014
Polinices
? sp. Hansen & Surlyk: tab. 3.
Material.
MGUH
33160, a specimen from the unofficially catalogued sample SR.741.C, and a last specimen without number deposited in the old collections of the Natural History Museum of
Denmark
.
Occurrence.
Lithified top of the Maastrichtian Højerup Member at Rødvig and Holtug Quarry, Stevns Klint.
Description.
Protoconch low-spired, on specimen
MGUH
33160
2.1 mm
wide and about
1.6 mm
high, consisting of around 2 ¾ whorls. Whorl height only slowly increasing.
Teleoconch fairly high-spired with relatively weakly convex whorls, separated by deep suture. Whorl height corresponding to half the width, increasing rapidly abapically. Growth lines prosocline, nearly straight.
Remarks.
The fragmentary preservation of the specimens prevents a sound generic assignment, but the overall form strongly resembles that of
Polinices
. It is distinguished from
Polinices
? sp. A described above by the elongated spire and apparently also by a slightly higher whorl number for the protoconch.