Propebela aff. turricula ( Montagu, 1803 )

Propebela aff. turricula ( Montagu, 1803) View in CoL ( Fig. 12G View FIG 1-G View FIG 3 View FIG )

MATERIAL AND DIMENSIONS. — Maximum height 10.7 mm, width 4.4 mm. — RGM.1365012 (90+), leg. ACJ ; RGM.1365294 (21), leg. ACJ ; RGM.1364929 (31), leg. WG ; RGM.1365291 (1), leg. AWJ ; RGM.1365117 (115), leg. AWJ .

SPECIES CHARACTERISATION. — Small fusiform shell. Two smooth protoconch whorls. Three quadrate teleoconch whorls separated by well-defined swallow suture. Sculpture consists of two spiral cords conferring the quadrate aspect of the whorls; and around 15 opisthocline axial ribs. Last whorl is covered by numerous spiral cords and ribs, continuing on the base. Well developed columelar lip. Elliptical aperture, with a short, widely open siphonal canal.

DISTRIBUTION. — Lower Pleistocene: Atlantic, Selsoif (this paper).

REMARKS

Even though Propebela turricula has a wide morphological variability particularly in material from the Quaternary of the NSB ( Raad et al. 2016), the elongate-shaped specimens with well pronounced ribbing from Selsoif appear to fall outside the range of variation. Further study is required to establish whether this might represent a new species.