Fromea complicata Brideaux, 1977

Tax. jr. synonym of Fromea atlantica (Habib, 1972) Davies, 1983, according to Davies, 1983. Jansonius, 1989, retained Fromea complicata as a separate species.
Holotype: Brideaux, 1977, pl.7, figs.1-2
Locus typicus: Richardson Mountains, District of Mackenzie, Canada
Stratum typicum: Aptian-Albian

Original diagnosis: Brideaux, 1977, p. 18-19
Shape: Autocyst distinctly longer than broad, maximum width at the mid-line (usually the presum position of the pericingulum), tapering and rounded at both apices; dorso-ventral compression.
Phragma: Autophragm about 1 Ám thick; smooth or scabrate; two major fold systems interpreted as related to position of the pericingulum and perisulcus; numerous other minor wrinkles and folds.
Paratabulation: Evidence for determinable paratabulation lacking.
Archeopyle/operculum: A subangular to irregular opening, presumably situated at the apex, is interpreted as an apical archeopyle; operculum free and simple, not observed separately. Formula A.
Pericingulum/perisulcus: A major transverse fold system present on all observed specimens, rarely (holotype) associated with a lateral invagination at the mid-line, interpreted as indicating presence of a pericingulum; a major longitudinal fold system, extending the length of the autocyst, appearing to be ventral to the pericingulum fold system, interpreted as indicating the presence of a perisulcus.
Variation: The pericingular fold system, on some specimens, appears offset and somewhat helicoid; on most specimens, however, it occurs only on one surface.
Dimensions: Autocyst length, 58-80 Ám; autocyst width, 43-60 Ám. Autocyst length, 41-96 Ám; autocyst width, 27-64 Ám.