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Fromea quadrangularis
From Fensome et al., 2019:
Fromea quadrangularis Fensome et al., 2016b, p.77–78, pl.16, figs.11–12,15–16. Holotype: Fensome et al., 2016b, pl.16, fig.16. Age: last occurrence, early Campanian.
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Original description (Fensome et al., 2016b):
Fromea quadrangularis sp. nov.
(Plate 16, figs 11, 12, 15, 16)
Holotype. Plate 16, fig. 16, from a cuttings sample at 2375 m in Skolp E-07, MGUH no. 31352, sample YD15665, slide 04, co-ordinates 30.9 × 111.9, England Finder D31-1. Overall length 88 μm; maximum width 35 μm; minimum width 27 μm; wall thickness 1 μm.
The age determined for the sample from which the holotype was recovered is early Campanian, Late Cretaceous.
Etymology. The epithet is from the Latin words quadra, meaning four and angularis, having angles, in reference to the quadrangular shape of specimens of this species.
Diagnosis. A slender elongate rectangular species of Fromea with a thin smooth wall and generally two longitudinal folds. Where present, the folds start at the antapex and continue along the body to the circular ‘apical’ opening. No accessory opening sutures or equatorial ‘girdle’ have been observed.
Size. Overall length 77–101 μm; maximum width 30–45 μm; minimum width 27–37 μm; seven specimens measured.
Age. LO: early Campanian.
Remarks. Some specimens of Fromea quadrangularis are twisted, resulting in an elongate jar-like shape with longitudinal folds; other specimens have been slightly compressed, resulting in a weak equatorial extension and a splitting of the elongate folds.
Fromea quadrangularis Fensome et al., 2016b, p.77–78, pl.16, figs.11–12,15–16. Holotype: Fensome et al., 2016b, pl.16, fig.16. Age: last occurrence, early Campanian.
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Original description (Fensome et al., 2016b):
Fromea quadrangularis sp. nov.
(Plate 16, figs 11, 12, 15, 16)
Holotype. Plate 16, fig. 16, from a cuttings sample at 2375 m in Skolp E-07, MGUH no. 31352, sample YD15665, slide 04, co-ordinates 30.9 × 111.9, England Finder D31-1. Overall length 88 μm; maximum width 35 μm; minimum width 27 μm; wall thickness 1 μm.
The age determined for the sample from which the holotype was recovered is early Campanian, Late Cretaceous.
Etymology. The epithet is from the Latin words quadra, meaning four and angularis, having angles, in reference to the quadrangular shape of specimens of this species.
Diagnosis. A slender elongate rectangular species of Fromea with a thin smooth wall and generally two longitudinal folds. Where present, the folds start at the antapex and continue along the body to the circular ‘apical’ opening. No accessory opening sutures or equatorial ‘girdle’ have been observed.
Size. Overall length 77–101 μm; maximum width 30–45 μm; minimum width 27–37 μm; seven specimens measured.
Age. LO: early Campanian.
Remarks. Some specimens of Fromea quadrangularis are twisted, resulting in an elongate jar-like shape with longitudinal folds; other specimens have been slightly compressed, resulting in a weak equatorial extension and a splitting of the elongate folds.