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Rottnestia simplicia
Rottnestia simplicia Cookson and Eisenack, 1961
Originally Rottnestia, subsequently Psaligonyaulax, thirdly (and now) Impagidinium?.
Holotype: Cookson and Eisenack, 1961, pl.2, figs.3-4, text-figs.1e-f; Jan du Chêne et al., 1986, pl.54, figs.1-5
Locus typicus: Rottnest Bore, W. Australia
Stratum typicum: Lower Tertiary
Original diagnosis: Cookson and Eisenack, 1961, p.42
Shell without appendages. Apical and antapical expansions of the same construction as those of R. borussica but less strongly developed, apical horn well marked. Longitudinal furrow distinct, broadening towards the antapex, Girdle, tabulation and pylome similar to those of R. borussica. The internal body is elongate-oval in outline.
Dimensions: Type - Length 83 µm, breadth 56 µm, internal body 60 x 38 µm.
Originally Rottnestia, subsequently Psaligonyaulax, thirdly (and now) Impagidinium?.
Holotype: Cookson and Eisenack, 1961, pl.2, figs.3-4, text-figs.1e-f; Jan du Chêne et al., 1986, pl.54, figs.1-5
Locus typicus: Rottnest Bore, W. Australia
Stratum typicum: Lower Tertiary
Original diagnosis: Cookson and Eisenack, 1961, p.42
Shell without appendages. Apical and antapical expansions of the same construction as those of R. borussica but less strongly developed, apical horn well marked. Longitudinal furrow distinct, broadening towards the antapex, Girdle, tabulation and pylome similar to those of R. borussica. The internal body is elongate-oval in outline.
Dimensions: Type - Length 83 µm, breadth 56 µm, internal body 60 x 38 µm.