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Aiora*
From Williams et al., 2017:
[Aiora, Davey, 1978, p.892
name illegitimate; jr. homonym of Aiora Cookson and Eisenack, 1960
Type species: as Aiora fenestrata, Cookson and Eisenack, 1960a (pl.2, fig.17)] ; Aiora perforata, Davey, 1978
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Original (illegitimate) description: [Davey, 1978]:
Diagnosis:
The cyst consits of a dorso-ventrally flattened shell, subcircular in outline, from which radiate a low number of processes in the plane of flattening at or near the lateral margins. These processes either branch complexly and link distally with the two adjacent processes or broaden into a surrounding fenestrate membrane, all in the plane of flattening; the outline of this outer structure is subcicular.
The archeopyle is dorsal precingular formed by the loss of a single plate (type P).
Remarks:
The diagnosis of this genus is emended to draw attention to the positioning of the processes and to the presence of a dorsal precingular archeopyle. Cookson and Eisenack erected the genus Aiora in 1960 and made Cannosphaeropsis fenestrata Deflandre an Cookson, 1955, the type species. However, it is considered that Cookson and Eisenack incorrectly attributed specimens that they found during their 1960 study to the previously described species C. fenestrata. The illustration of the holotype of the latter species (Deflandre and Cookson, 1995, pl. 3, fig. 2) distinctly shows that numerous processes radiate from the entire shell surface and are not restricted to one plane as in Aiora. Cookson and Eisenack's specimens are distinctive and warrant a separate genus: this they described as Aiora, basing it on the Rough Range specimens which are below transferred from Cannosphaeropsis fenestrata to A. perforare nom. nov. which thus becomes the type species of the genus.
[Aiora, Davey, 1978, p.892
name illegitimate; jr. homonym of Aiora Cookson and Eisenack, 1960
Type species: as Aiora fenestrata, Cookson and Eisenack, 1960a (pl.2, fig.17)] ; Aiora perforata, Davey, 1978
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Original (illegitimate) description: [Davey, 1978]:
Diagnosis:
The cyst consits of a dorso-ventrally flattened shell, subcircular in outline, from which radiate a low number of processes in the plane of flattening at or near the lateral margins. These processes either branch complexly and link distally with the two adjacent processes or broaden into a surrounding fenestrate membrane, all in the plane of flattening; the outline of this outer structure is subcicular.
The archeopyle is dorsal precingular formed by the loss of a single plate (type P).
Remarks:
The diagnosis of this genus is emended to draw attention to the positioning of the processes and to the presence of a dorsal precingular archeopyle. Cookson and Eisenack erected the genus Aiora in 1960 and made Cannosphaeropsis fenestrata Deflandre an Cookson, 1955, the type species. However, it is considered that Cookson and Eisenack incorrectly attributed specimens that they found during their 1960 study to the previously described species C. fenestrata. The illustration of the holotype of the latter species (Deflandre and Cookson, 1995, pl. 3, fig. 2) distinctly shows that numerous processes radiate from the entire shell surface and are not restricted to one plane as in Aiora. Cookson and Eisenack's specimens are distinctive and warrant a separate genus: this they described as Aiora, basing it on the Rough Range specimens which are below transferred from Cannosphaeropsis fenestrata to A. perforare nom. nov. which thus becomes the type species of the genus.