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Valensiella dictydia
From Fensome et al., 2019:
Valensiella dictydia (Sarjeant, 1972, p.41, pl.3, fig.3; pl.6, fig.6) Lentin and Williams, 1993, p.661.
Holotype: Sarjeant, 1972, pl.6, fig.6.
Originally Chytroeisphaeridia, subsequently Batiacasphaera, thirdly Escharisphaeridia, fourthly Cassiculosphaeridia, fifthly (and now) Valensiella.
Age: Bathonian–Callovian.
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Original description: [Sarjeant, 1972]:
Chytroeisphaeridia dictydia sp. nov.
Plate 3, fig. 3; plate 6, fig. 6.
Derivation of Name: Gr. diktydion n. dim., a net; with reference to the surface patterning.
Diagnosis: Shell broadly oval to spheroidal, the apex lost in ar-chaeopyle formation. The margin of the archaeopyle exhibits a sulcal notch and slits corresponding in position to sutures between precingular plates. The periphragm is densely and minutely reticulate, the reticulae formed by raised ridges and having an irregularly polygonal form.
Holotype: Specimen GR426/8/9, upper horizon in the Upper Varde-kl0ft F~rmation; lodged in the Mineralogical Museum, University of Copenhagen.
Dimensions: Holotype: length (without apex) 69 μ, breadth 71.5 μ. Range: upper horizon - length (apex lacking) 54 to 74 μ (mean 65.14 μ), breadth 57 to 76 μ (mean 63.93 μ): lower horizon - length of single specimen measured 65 μ, breadth 70 μ.
Material: 16 specimens in the upper horizon (seven of them suitable for measurement), 15 specimens in the lower horizon.
Remarks : This new species is characterised by the nature of its surf ace ornamentation.
Valensiella dictydia (Sarjeant, 1972, p.41, pl.3, fig.3; pl.6, fig.6) Lentin and Williams, 1993, p.661.
Holotype: Sarjeant, 1972, pl.6, fig.6.
Originally Chytroeisphaeridia, subsequently Batiacasphaera, thirdly Escharisphaeridia, fourthly Cassiculosphaeridia, fifthly (and now) Valensiella.
Age: Bathonian–Callovian.
---------------------------------------------------------------------------------------------------
Original description: [Sarjeant, 1972]:
Chytroeisphaeridia dictydia sp. nov.
Plate 3, fig. 3; plate 6, fig. 6.
Derivation of Name: Gr. diktydion n. dim., a net; with reference to the surface patterning.
Diagnosis: Shell broadly oval to spheroidal, the apex lost in ar-chaeopyle formation. The margin of the archaeopyle exhibits a sulcal notch and slits corresponding in position to sutures between precingular plates. The periphragm is densely and minutely reticulate, the reticulae formed by raised ridges and having an irregularly polygonal form.
Holotype: Specimen GR426/8/9, upper horizon in the Upper Varde-kl0ft F~rmation; lodged in the Mineralogical Museum, University of Copenhagen.
Dimensions: Holotype: length (without apex) 69 μ, breadth 71.5 μ. Range: upper horizon - length (apex lacking) 54 to 74 μ (mean 65.14 μ), breadth 57 to 76 μ (mean 63.93 μ): lower horizon - length of single specimen measured 65 μ, breadth 70 μ.
Material: 16 specimens in the upper horizon (seven of them suitable for measurement), 15 specimens in the lower horizon.
Remarks : This new species is characterised by the nature of its surf ace ornamentation.