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Dictyopyxidia areolata
Dictyopyxidia areolata (Cookson and Eisenack, 1960) Eisenack and Kjellstr÷m, 1971
Originally Dictyopyxis, subsequently Dictyopyxidia.
Tax. jr. synonym of Ellipsoidictyum cinctum Klement, 1960, according to Sarjeant, 1976, and Kunz, 1990.
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: Dictyopyxis areolata
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: Dictyopyxis areolata
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, subsequently Dictyopyxidia.
Tax. jr. synonym of Ellipsoidictyum cinctum Klement, 1960, according to Sarjeant, 1976, and Kunz, 1990.
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: Dictyopyxis areolata
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: Dictyopyxis areolata
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.