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Dictyopyxis areolata
Dictyopyxis areolata Cookson and Eisenack, 1960
Originally Dictyopyxis (generic name illegitimate), subsequently Dictyopyxidia.
Following I.C.N. Article 55.1, the species name Dictyopyxis areolata is validly published even though the generic name Dictyopyxis is illegitimate.
Taxonomic senior synonym: Ellipsoidictyum cinctum, according to Sarjeant (1976a, p.23–24).
Holotype: Cookson and Eisenack, 1960, pl.39, fig.12
Locus typicus: Canning Basin, Western Australia
Stratum typicum: Oxfordian-Early Kimmeridgian
Original description: Cookson and Eisenack, 1960, p.255
Shell ellipsoidal to nearly cylindrical. Reticulum irregular, thin-walled with four- to six-sided meshes of varying size. In the equatorial region the meshes tend to be more regularly arranged and square to rectangular in shape giving the impression of a "girdle". A longitudinal row of elongate meshes is sometimes evident but the significance of the arrangement is not clear.
Dimensions: holotype: c.100 Ám long, 66 Ám broad. Range: 86-124x54-66 Ám.
Affinities:
Cookson and Eisenack, 1960, p.255: D. Areolata superficially resembles Palaeoperidinium reticulatum Valensi (1953) from French Bajocian and Bathonian flints but shows no indication of the two superimposed reticula which characterize this species.
Originally Dictyopyxis (generic name illegitimate), subsequently Dictyopyxidia.
Following I.C.N. Article 55.1, the species name Dictyopyxis areolata is validly published even though the generic name Dictyopyxis is illegitimate.
Taxonomic senior synonym: Ellipsoidictyum cinctum, according to Sarjeant (1976a, p.23–24).
Holotype: Cookson and Eisenack, 1960, pl.39, fig.12
Locus typicus: Canning Basin, Western Australia
Stratum typicum: Oxfordian-Early Kimmeridgian
Original description: Cookson and Eisenack, 1960, p.255
Shell ellipsoidal to nearly cylindrical. Reticulum irregular, thin-walled with four- to six-sided meshes of varying size. In the equatorial region the meshes tend to be more regularly arranged and square to rectangular in shape giving the impression of a "girdle". A longitudinal row of elongate meshes is sometimes evident but the significance of the arrangement is not clear.
Dimensions: holotype: c.100 Ám long, 66 Ám broad. Range: 86-124x54-66 Ám.
Affinities:
Cookson and Eisenack, 1960, p.255: D. Areolata superficially resembles Palaeoperidinium reticulatum Valensi (1953) from French Bajocian and Bathonian flints but shows no indication of the two superimposed reticula which characterize this species.