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Canningia rugulosa
From Fensome et al., 2019:
Canningia rugulosa (Clarke and Verdier, 1967, p.57–58, pl.12, figs.5–6; text-fig.23) Stover and Evitt, 1978, p.25.
Holotype: Clarke and Verdier, 1967, pl.12, fig.6; Fensome et al., 2019a, fig.13Q.
Originally Aptea, subsequently (and now) Canningia.
Locus typicus: Culver Cliff, Isle of Wight, England
Stratum typicum: Santonian
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Original description as Aptea rugulosa: [Clarke and Verdier, 1967, p. 58]:
Diagnosis:
Inner body protruding into the apical and antapical horns. Sculpture finely rugulate to reticulate.
Description:
Inner body oval. Outer wall thin and differentiated into an apical and two antapical horns. The inner body is attached to the outer membrane except at the apex and antapex into which it may protrude. The antapical horns are generally equal and symmetrically placed. The outer membrane is wavy in outline, and gives the appearance of a rugulation or an irregular reticulum.
An apical archaeopyle is generally visible.
Dimensions:
Holotype: Overall length 74 µm, overall breadth 50 µm, length inner body 59 µm, breadth inner body 38 µm, length apical horn 8 µm, length antapical horns 8-9 µm.
Range: respectively 65-82 µm, 50-53 µm, 50-62 µm, 38-50 µm, 6-8 µm, 6-12 µm.
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Comments Fensome et al., 2019a:
From its original description and illustrations, this species is clearly holocavate. Clarke and Verdier (Citation1967, p. 58) noted that the ‘inner body is attached to the outer membrane except at the apex and antapex …’, and that ‘The outer membrane is wavy in outline, and gives the appearance of a rugulation or an irregular reticulum’. This wall structure and the apparent offset position of the parasulcal notch (Clarke and Verdier Citation1967, pl. 12, fig. 5) accords with an areoligeracean affinity, and with Canningia in particular. Although Clarke and Verdier (Citation1967) emphasised the rugulate nature of the ornament, this may be difficult to distinguish from the ornament of Canningia reticulata, and thus the two species may be synonymous.
Stratigraphical occurrence. This species was originally recovered from the Santonian of the Isle of Wight, England.
Canningia rugulosa (Clarke and Verdier, 1967, p.57–58, pl.12, figs.5–6; text-fig.23) Stover and Evitt, 1978, p.25.
Holotype: Clarke and Verdier, 1967, pl.12, fig.6; Fensome et al., 2019a, fig.13Q.
Originally Aptea, subsequently (and now) Canningia.
Locus typicus: Culver Cliff, Isle of Wight, England
Stratum typicum: Santonian
---------------------------------------------------------------------------------------------------
Original description as Aptea rugulosa: [Clarke and Verdier, 1967, p. 58]:
Diagnosis:
Inner body protruding into the apical and antapical horns. Sculpture finely rugulate to reticulate.
Description:
Inner body oval. Outer wall thin and differentiated into an apical and two antapical horns. The inner body is attached to the outer membrane except at the apex and antapex into which it may protrude. The antapical horns are generally equal and symmetrically placed. The outer membrane is wavy in outline, and gives the appearance of a rugulation or an irregular reticulum.
An apical archaeopyle is generally visible.
Dimensions:
Holotype: Overall length 74 µm, overall breadth 50 µm, length inner body 59 µm, breadth inner body 38 µm, length apical horn 8 µm, length antapical horns 8-9 µm.
Range: respectively 65-82 µm, 50-53 µm, 50-62 µm, 38-50 µm, 6-8 µm, 6-12 µm.
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Comments Fensome et al., 2019a:
From its original description and illustrations, this species is clearly holocavate. Clarke and Verdier (Citation1967, p. 58) noted that the ‘inner body is attached to the outer membrane except at the apex and antapex …’, and that ‘The outer membrane is wavy in outline, and gives the appearance of a rugulation or an irregular reticulum’. This wall structure and the apparent offset position of the parasulcal notch (Clarke and Verdier Citation1967, pl. 12, fig. 5) accords with an areoligeracean affinity, and with Canningia in particular. Although Clarke and Verdier (Citation1967) emphasised the rugulate nature of the ornament, this may be difficult to distinguish from the ornament of Canningia reticulata, and thus the two species may be synonymous.
Stratigraphical occurrence. This species was originally recovered from the Santonian of the Isle of Wight, England.