Beudanticeras (Beudanticeras) albense  Breistroffer, 1947

Measurements	D mm	H/D	T/D	O/D	H/T
RJ-35	33	0.45	0.32	0.21	1.43
CP-127	35.7	0.48	0.32	0.21	1.50
CP-82	41.9	0.45	0.32	0.25	1.44

Age	Origin
Grey clay O. subhilli zone Lower Albian	Mesnil-Saint-Père Aube, France

Description. Beautiful pyritic internal mold, completely septate, with well exposed sutures. Compressed whorls with an ovoid section, two-thirds covered, with a maximum thickness at one-third of the whorl height. Convex flanks converge towards a broadly rounded venter. Small umbilicus with a low, quarter-circle wall, showing the origin of the ribs on the inner whorls. There are 12 fine, sigmoid ribs, regularly spaced on the last whorl. They originate on the umbilical slope and are bordered, on the outer half of the flanks, by two shallow constrictions, a strong one anteriorly and a weaker one posteriorly. There are also some weaker intermediate ribs, limited to the outer half of flanks. All these ribs and constrictions cross the venter with a strong, rounded, proverse sinus. The suture is almost as simple as that of B. (B.) laevigatum, with less tall elements. The auxiliary lobes are narrower than the saddles and more deeply incised. The first lateral lobe, L1, is broad.

Remarks. Personal discovery. Species created by Breistroffer (1947, p. 63) for certain Ammonites parandieri d'Orbigny, 1841, illustrated by Pictet & Campiche (1861, pl. 39, fig. 3-7, holotype fig. 5). It is known from internal molds no larger than 5 cm, and the appearance of its test is unknown. It is found in the subhilli and steinmanni zones, and in the pseudolyelli subzone of the benettianus zone (Lower Albian). Characterized by more than 10 ribs per whorl according to Matrion (2010), it coexists with Beudanticeras dupinianum (d'Orbigny, 1841), which closely resembles it and has the same suture lines. The latter, however, is thicker and has fewer, stronger ribs (5-8 per whorl); see its entry. B. albense may simply be a less robust variant of B. dupinianum.