Loxoconcha ex. gr. petasa (Livental, 1929)

Fig. 29 a-j

Description. These specimens have the same outline as L. petasa but display a different kind of ornamentation. The valves surface is covered by a similar but smaller sized and much more irregular pronounced polygonal pattern. Some specimens, in particular juveniles, show a secondary reticulation inside the primary one. The crests that separate the polygons appear thinner and sharper than in L. petasa . Conules pores are pronounced, stronger than in L. petasa and distributed randomly but mainly in the posterior half of the valve. Dimension: L = 0,65 – 0,71 mm, H = 0,36 – 0,39 mm, the minimum sizes include juveniles too.