Stephanelytron brontes Courtinat, 1999, p.178, pl.1, figs.1–4; text-fig.2.
Holotype: Courtinat, 1999, pl.1, fig.2. N.I.A.
Age: late Callovian–early Oxfordian.

Original description, Courtinat, 1999: ?Stephanelytron brontes n. sp. (this study), Plate l, figs 1-4
Holotype. This study, Plate l, fig. 2
Dimensions. Length of central body (without horn), 50 μm; equatorial diameter of central body, 46 μm; length of processes, 2 μm; R = 0,04.
Age. Late Callovian (Lamberti Zone).
Geographical location. France (Ardeche, Savournon).
Diagnostic elements. (See Tables 2 and 3):
Apical horn present, long. Length of apical horn >20% of diameter of central body
Corona: One smooth wall on 2’’’’ paraplate; low and straight; thick base; intra corona area smooth.
Paratabulation: indicated by archeopyle only.
Processes: Dense cover of non-paratabular processes. Processes are cylindrical, tubiform to buccinate, non-perforate
Autophragm: Smooth, faintly granulate
Archeopyle/operculum: unknown.
Stratigraphic range.(See Table 4): First appearance: Lamberti Zone (this study), Last appearance: Minax Zone (this study)