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Alterbidinium pentaradiatum ssp. precedum
Alterbidinium? pentaradiatum ssp. precedum, (Cookson and Eisenack, 1974), Lentin and Williams 1985
Originally Deflandrea, subsequently Alterbia; NOW Alterbidinium
Holotype: Cookson and Eisenack, 1974, pl.20, fig.1
Locus typicus: Peeble Point Formation, SW Victoria, Australia
Stratum typicum: Paleocene
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Original description as Deflandrea pentaradiata ssp. preceda: [Cookson and Eisenack, 1974, p. 49]: (Translation: LPP)
Diagnosis:
A subspecies of Deflandrea pentaradiata with following characteristics: periphragm thin, smooth and seldom weakly punctate. Apical horn with small button-like protuberance, lateral horns weakly developed and rounded. Girdle bordered by weak folds. Distance between antapical horns larger than on Deflandrea pentaradiata and horns less pointed. Endophragm thicker and strongly granulate.
Originally Deflandrea, subsequently Alterbia; NOW Alterbidinium
Holotype: Cookson and Eisenack, 1974, pl.20, fig.1
Locus typicus: Peeble Point Formation, SW Victoria, Australia
Stratum typicum: Paleocene
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Original description as Deflandrea pentaradiata ssp. preceda: [Cookson and Eisenack, 1974, p. 49]: (Translation: LPP)
Diagnosis:
A subspecies of Deflandrea pentaradiata with following characteristics: periphragm thin, smooth and seldom weakly punctate. Apical horn with small button-like protuberance, lateral horns weakly developed and rounded. Girdle bordered by weak folds. Distance between antapical horns larger than on Deflandrea pentaradiata and horns less pointed. Endophragm thicker and strongly granulate.