| Measurements | D mm | H/D | T/D | O/D | H/T |
|---|---|---|---|---|---|
| Jacob, 1907 | 22 | 0.50 | 0.45 | 0.18 | 1.10 |
| CP-86 | 31.8 | 0.45 | 0.40 | 0.23 | 1.13 |
| Jacob, 1907 | 44 | 0.40 | 0.45 | 0.22 | 0.95 |
| Age | Origin |
|---|---|
|
Grey clay O. bulliensis zone Lower Albian |
Mesnil-Saint-Père Aube France |
| Measurements | D mm | H/D | T/D | O/D | H/T |
|---|---|---|---|---|---|
| Jacob, 1907 | 22 | 0.50 | 0.45 | 0.18 | 1.10 |
| CP-86 | 31.8 | 0.45 | 0.40 | 0.23 | 1.13 |
| Jacob, 1907 | 44 | 0.40 | 0.45 | 0.22 | 0.95 |
| Age | Origin |
|---|---|
|
Grey clay O. bulliensis zone Lower Albian |
Mesnil-Saint-Père Aube France |
Description. Involute pyritic phragmocone. Internal whorls are visible in the umbilicus with a vertical wall rounded towards the flank. Whorl section a bit compressed, elliptical, thicker near umbilical margin, with slightly flattened flanks. Ventral broadly rounded, without distinct shoulders. Nine blunt umbilical bullae, radially elongated, give rise to pairs of radial or slightly flexuous ribs, curved forward near the venter traversed by a broad convex sinus. One or two shorter and weaker ribs are inserted between successive pairs, giving 31 ribs in total. The two ribs of the pairs are separated by a slight constriction, for example, at 10 and 11 o'clock on the lateral view. First lateral lobe L1 trifid, much longer than the ventral lobe L, with a stronger external branch. Principal saddle S with a deep median incision.
Remarks. Personal discovery. See Jacob, 1907, pl. IV, figs. 6-9. Our CP-86 is very similar in proportions, suture, and ornamentation. U. subornata Casey, 1949, is more compressed (H/T = 1.28), with a wider umbilicus (O/D = 0.28) and weaker ribs. Its tuberculate ribs are simple (not bifurcated), more flexuous, and separated by 3 intercalaries. U. rebouli (Jacob, 1907, pl. IV, figs. 1-5) is even more compressed (H/T = 1.45 at 34 mm), with a smaller umbilicus (O/D = 0.14) and weaker ribs, except for the one in fig. 5. It also has a narrower L1. U. boussaci Fallot, 1920, is also more compressed, with 7-8 spaced and very elongated tubercles, rising almost to mid-flank, and very weak ribs. Jacob's specimens come from condensed levels at La Balme de Rencurel (Isère, in the French Alps). In the Aube department, U. subornata has been found from the bulliensis zone to the benettianus zone (Matrion, 2010). Here we report Uhligella balmensis for the first time in this department.