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Hystrichosphaeridium lobospinosum
Hystrichosphaeridium lobospinosum Gocht in Weiler, 1956, p.138
Name not validly published: holotype not designated and name used in anticipation of future acceptance (I.C.N. Article 36.1b).
NOW Chiropteridium. Originally Hystrichosphaeridium (name not validly published), subsequently (and now) Chiropteridium, thirdly Baltisphaeridium (name not validly published; acritarch). This name was also not validly published in Maier (1959, p.314), since it too was merely used in anticipation of future acceptance of the name (I.C.N. Article 36.1b).
Holotype: not designated
Lectotype: Weiler, 1956, pl.12, fig.3 (designated by Lentin and Williams, 1989)
Eisenack and Kjellström, 1971, gave the citation Chiropteridium lobospinosum Gocht, 1960 and cited the holotype as the specimen illustrated in Gocht, 1960, pl.17, fig.1. However, Gocht in Weiler, 1956, met all the criteria at that time for valid publication of this species.
Stratum typicum: Middle Oligocene
Translation Gocht, 1956: LPP
Original description: Gocht in Weiler, 1956, p. 138-139
(annotated) Around a more or less circular central body there are characteristically built fringes. They are distally strongly split, furcate and often very pointed. The free ends are mostly short, towards the basis they soon fuse together into the planar fringes. The central body is never completely encircled by a fringe; at maximum after a quarter of the outline of the body it ends, to be relieved by a new fringe or single isolated process. The branching of the fringes starts at a varying distance from the proximal end, giving rise to a rather irregular image. Similarly, the always smooth-edged indentations of the fringes are now deep, now small and insignificant. That the fringes, as shown in Gocht (1952, fig.2), also run on the central body outside the equatorial plane, can be but suspected in a few cases, but not definitely stated.
Gocht was able, in one of his specimens, to determine that the processes are hollow. [...] Sometimes small arches occur at the bases of the fringes. When the fringe is two-layered, as Gocht could determine in his specimens, then always only one fringe-layer is perforated by an arch, never both, because below substance of the fringe is always visible .[...]
Dimensions: central body diameter: 90-95 µm, diameter including fringes: 135-165 µm (20 specimens).
Name not validly published: holotype not designated and name used in anticipation of future acceptance (I.C.N. Article 36.1b).
NOW Chiropteridium. Originally Hystrichosphaeridium (name not validly published), subsequently (and now) Chiropteridium, thirdly Baltisphaeridium (name not validly published; acritarch). This name was also not validly published in Maier (1959, p.314), since it too was merely used in anticipation of future acceptance of the name (I.C.N. Article 36.1b).
Holotype: not designated
Lectotype: Weiler, 1956, pl.12, fig.3 (designated by Lentin and Williams, 1989)
Eisenack and Kjellström, 1971, gave the citation Chiropteridium lobospinosum Gocht, 1960 and cited the holotype as the specimen illustrated in Gocht, 1960, pl.17, fig.1. However, Gocht in Weiler, 1956, met all the criteria at that time for valid publication of this species.
Stratum typicum: Middle Oligocene
Translation Gocht, 1956: LPP
Original description: Gocht in Weiler, 1956, p. 138-139
(annotated) Around a more or less circular central body there are characteristically built fringes. They are distally strongly split, furcate and often very pointed. The free ends are mostly short, towards the basis they soon fuse together into the planar fringes. The central body is never completely encircled by a fringe; at maximum after a quarter of the outline of the body it ends, to be relieved by a new fringe or single isolated process. The branching of the fringes starts at a varying distance from the proximal end, giving rise to a rather irregular image. Similarly, the always smooth-edged indentations of the fringes are now deep, now small and insignificant. That the fringes, as shown in Gocht (1952, fig.2), also run on the central body outside the equatorial plane, can be but suspected in a few cases, but not definitely stated.
Gocht was able, in one of his specimens, to determine that the processes are hollow. [...] Sometimes small arches occur at the bases of the fringes. When the fringe is two-layered, as Gocht could determine in his specimens, then always only one fringe-layer is perforated by an arch, never both, because below substance of the fringe is always visible .[...]
Dimensions: central body diameter: 90-95 µm, diameter including fringes: 135-165 µm (20 specimens).