Eulima, Risso, 1826

Hansen, Thomas, 2019, Gastropods from the Cretaceous-Palaeogene boundary in Denmark, Zootaxa 4654 (1), pp. 1-196 : 106

Eulima ? sp.

Fig. 26 AE

Material. Specimen MGUH 33182 consists of an internal and external mould of the lower half of the shell.

Occurrence. The lithified top of the Højerup Member of the upper Maastrichtian Tor Formation at Højerup Church, Stevns Klint.

Description. Protoconch unknown. Teleoconch whorls flat, separated by indistinct suture; whorl height corresponding to 2/3 the width. Aperture moderately high and narrow tear-shaped, the H/W ratio corresponding to 2.4 or just above. Inner aperture margin sigmoid with nearly straight columella.

Measurements. MGUH 33182 is 2.85 mm high and 1.25 mm wide, consisting of three teleoconch whorls.

Remarks. The taxon strongly resembles Eulima ? danica ( Ravn, 1933) treated above, but differs through a relatively wider shell and aperture and a slightly more curved outline of the inner aperture margin. It resembles the Late Cretaceous Eulima gracilistylis Sohl, 1964a and E. persimplicata ( Wade, 1926) from Mississippi, USA, but differs in the narrower aperture and a more slender outline.

Figures

FIGURE 26. A–B. Alvania sp. A. Silicone cast of MGUH 33164. Width 1.5 mm. C. Alvania sp. B. Silicone cast of MGUH 33165. Width 0.8 mm. D. Zebina sp., Wax cast of MGUH 33166. Width 0.9 mm. E–H. Ceratia rodvigensis n. sp. E–F. Silicone cast of holotype MGUH 33167. Width 0.8 mm. G–H. Silicone cast of paratype MGUH 33168. Width 0.9 mm. I–J. Ceratia? sp. I. Mould of MGUH 33169. Width 0.9 mm. J. Silicone cast of MGUH 33170. Height 1.1 mm. K. Anchura sp., Silicone cast of MGUH 33171. Width 8.6 mm. L–M. Columbellaria tuberculosa (Binkhorst, 1861). Silicone cast of ØSM.10042-202-a–c. Width 5.2 mm, height 5.9 mm. N. Tylostoma? sp., inner mould MGUH 33172. Width 19.9 mm. O–P. Cassidae genus et sp. indet. Silicone cast and internal mould of ØSM.10042-315-a–b and c, respectively. Width 9.2 and 8.6 respectively. Q–U. Sassia faxense Ravn, 1933. Q. Detail of apex of MGUH 33173. Width of protoconch 1.4 mm. R. Silicone cast of MGUH 33174. Width 6.0 mm. S. Silicone cast of MGUH 33175. Width 6.5 mm. T. Silicone cast of MGUH 33176. Width 7.8 mm. U. Silicone cast of MGUH 33177. Width 5.2 mm. V–X. Hipponix sp. V–W. Internal mould MGUH 33178. Length 23.8 mm, width 19.5 mm. X. Inner mould MGUH 33179. Width 19.1 mm. Y–Z. Eulima? danica Ravn, 1933. Y. Silicone cast of MGUH 33180. Width 2.5 mm. Z. Silicone cast of MGUH 33181. Width 2.0 mm. AE. Eulima? sp., Mould MGUH 33182. Width 1.3 mm.