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Hystrichosphaera borussica
Hystrichosphaera borussica Eisenack, 1954
Now Rottnestia. Originally Hystrichosphaera, subsequently (and now) Rottnestia, thirdly Triblastula; see also Hystrichosphaeropsis (combination not validly published).
Holotype: Eisenack, 1954, pl. 9, fig. 5
Locus typicus: Palmnicken, Samland, E Prussia, Russia
Stratum typicum: Early Oligocene
Translation Eisenack, 1954: LPP
Original description: Eisenack, 1954, p. 62-63
Remark: the specimens depicted in Eisenack, 1954, are oriented upside-down.
Diagnosis: Central body oval, tabulation like in H. speciosa or H. wetzeli, the lower pole bearing an extensive system of wing-ledges, reaching onto the equatorial zone, but, in contrast to H. wetzeli, absent on the upper pole. Description (annotated): The tabulation of the approximately oval central body is determined by septa, similar to those in H. speciosa and H. wetzeli, viz.
Now Rottnestia. Originally Hystrichosphaera, subsequently (and now) Rottnestia, thirdly Triblastula; see also Hystrichosphaeropsis (combination not validly published).
Holotype: Eisenack, 1954, pl. 9, fig. 5
Locus typicus: Palmnicken, Samland, E Prussia, Russia
Stratum typicum: Early Oligocene
Translation Eisenack, 1954: LPP
Original description: Eisenack, 1954, p. 62-63
Remark: the specimens depicted in Eisenack, 1954, are oriented upside-down.
Diagnosis: Central body oval, tabulation like in H. speciosa or H. wetzeli, the lower pole bearing an extensive system of wing-ledges, reaching onto the equatorial zone, but, in contrast to H. wetzeli, absent on the upper pole. Description (annotated): The tabulation of the approximately oval central body is determined by septa, similar to those in H. speciosa and H. wetzeli, viz.