Loriolotrema undetermined

Loriolotrema sp. Plate 8: figs 2–4 Material. 1 specimen, SNSB-BSPG 2016 XXI 1780. Description. Shell broadly biconical, with gradate spire, 17 mm high, whorls low, rapidly increasing in width; edge at about mid-whorl of first preserved whorls, delimiting oblique ramp from approximately vertical abapical portion; weak spiral cords present on both sides of edge; orthocline axial ribs run from suture to suture, with wide interspaces; nodes at intersections of ribs and edge; edge strengthened during ontogeny and axial ribs become broadly bulging and blurred; nodes on intersections of ribs and edge become larger, rounder and also include the spiral cord located between edge and bordering spiral cord as well as bordering spiral cord; several spiral cords can be seen on wide, oblique ramp; base slightly convex with 4 (5?) spiral cords broken down into individual segments; spiral cords on base crossed by weakly strengthened growth lines; base phaneromphalous; aperture strongly damaged. Remarks. Loriolotrema? nodosa Gründel, Hostettler and Menkveld-Gfeller is larger, the strong enlargement of the nodes begins later in ontogeny, the spiral cords on the base are not divided into partial segments. Brachytrema kobyi Loriol in Loriol and Koby (1889) is more slender, the whorls have a stronger keel and the base has more and unsegmented spiral cords. Brachytrema filosum (Buvignier) sensu Cossmann (1913) is more slender, has more spiral cords on the base, the axial ribs are not as wide and the nodes on the edge are not as large.