Hipponix sp.

Figs 26 V–X

Material. MGUH 33178 and MGUH 33179, both internal moulds; the latter with fragments of shell preserved.

Occurrence. The lower Danian ‘dead layer’ in Dania Quarry, Northern Jutland.

Description. Shell fairly thin, limpet-shaped, with variable height; apex above or behind rear margin. Margin irregular, probably conforming to substrate surface, not crenulated within. Shell surface, if preserved, smooth.

Interior with very weak anteriorly opened horseshoe shaped muscle scar. Specimen MGUH 33179 additionally with weak axial ridge anteriorly, reaching 2/3 of the distance from apex out towards anterior margin, dividing a left and right attachment area.

Measurements. Largest specimen, MGUH 33178, 23.8 mm long at base, 19.5 mm wide and 16.0 mm high.

Remarks. The taxon may be conspecific with the Danian (?) Patella nov. sp. of Kaunhowen (1898: p. 15, pl. I: 3–4) from Holland. It appears to have been more thin-shelled than Hipponix dunkerianus Bosquet, 1848 as illustrated by Binkhorst (1861: p. 58, pl. IV: 12a–c) from the upper Maastrichtian of Limburg, the Netherlands.