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Hystrichosphaeridium unituberculatum
Hystrichsphaeridium unituberculatum Tasch, 1964
Now Kiokansium. Originally Hystrichosphaeridium, subsequently Kiokansium.
Tax. jr. synonym of Kiokansium (originally Hystrichosphaeridium recurvatum ssp. polypes) polypes (Cookson and Eisenack, 1962) Below, 1982, according to Duxbury, 1983, Lentin and Williams, 1985, 1989. Davey, 1969, raised Hystrichosphaeridium recurvatum ssp. polypes Cookson and Eisenack, 1962, to the species rank, as Cleistosphaeridium polypes. Therefore, at the species rank, Kiokansium unituberculatum is the tax. sr. synonym.
According to Stover and Evitt, 1978:
Tax. sr. synonym of Hystrichosphaeridium aruncium Tasch, 1964
Tax. sr. synonym of Hystrichosphaeridium eccentrum Tasch, 1964
Tax. sr. synonym of Hystrichosphaeridium entomium Tasch, 1964
Tax. sr. synonym of Hystrichosphaeridium fabium Tasch, 1964
Tax. sr. synonym of Hystrichosphaeridium follium Tasch, 1964
Tax. sr. synonym of Hystrichosphaeridium kiowanum Tasch, 1964
Tax. sr. synonym of Hystrichosphaeridium magnarmatum Tasch, 1964
Tax. sr. synonym of Hystrichosphaeridium marsupium Tasch, 1964
Tax. sr. synonym of Hystrichosphaeridium perovatum Tasch, 1964
Tax. sr. synonym of Hystrichosphaeridium protellipticum Tasch, 1964
Tax. sr. synonym of Hystrichosphaeridium replexum Tasch, 1964
Tax. sr. synonym of Hystrichosphaeridium tribrachiosum Tasch, 1964
Tax. sr. synonym of Hystrichosphaeridium triradicosum Tasch, 1964
Tax. sr. synonym of Hystrichosphaeridium valgum Tasch, 1964
Holotype: Tasch, 1964, pl.3, fig.8
Locus typicus: Clark County, Kansas, U.S.A.
Stratum typicum: Albian
Original diagnosis: Tasch, 1964, p.194
Subovate shell characterized by an inner ring of pointed protuberances that arise from a clearly defined inner band terminating in a small knob or neck. Exterior to this band, there is a fringe area, the surface and periphery of which bears flexible, curved, bifurcate or pointed processes.
Dimensions: Holotype: Maximum diameter of shell 46 Ám; maximum diameter of inner band 38 Ám; thickness of inner band 1.5 Ám; length of processes 8-14 Ám; thickness of processes, measured at base 2 Ám; density of processes 1.5 per 5 Ám of edge.
Now Kiokansium. Originally Hystrichosphaeridium, subsequently Kiokansium.
Tax. jr. synonym of Kiokansium (originally Hystrichosphaeridium recurvatum ssp. polypes) polypes (Cookson and Eisenack, 1962) Below, 1982, according to Duxbury, 1983, Lentin and Williams, 1985, 1989. Davey, 1969, raised Hystrichosphaeridium recurvatum ssp. polypes Cookson and Eisenack, 1962, to the species rank, as Cleistosphaeridium polypes. Therefore, at the species rank, Kiokansium unituberculatum is the tax. sr. synonym.
According to Stover and Evitt, 1978:
Tax. sr. synonym of Hystrichosphaeridium aruncium Tasch, 1964
Tax. sr. synonym of Hystrichosphaeridium eccentrum Tasch, 1964
Tax. sr. synonym of Hystrichosphaeridium entomium Tasch, 1964
Tax. sr. synonym of Hystrichosphaeridium fabium Tasch, 1964
Tax. sr. synonym of Hystrichosphaeridium follium Tasch, 1964
Tax. sr. synonym of Hystrichosphaeridium kiowanum Tasch, 1964
Tax. sr. synonym of Hystrichosphaeridium magnarmatum Tasch, 1964
Tax. sr. synonym of Hystrichosphaeridium marsupium Tasch, 1964
Tax. sr. synonym of Hystrichosphaeridium perovatum Tasch, 1964
Tax. sr. synonym of Hystrichosphaeridium protellipticum Tasch, 1964
Tax. sr. synonym of Hystrichosphaeridium replexum Tasch, 1964
Tax. sr. synonym of Hystrichosphaeridium tribrachiosum Tasch, 1964
Tax. sr. synonym of Hystrichosphaeridium triradicosum Tasch, 1964
Tax. sr. synonym of Hystrichosphaeridium valgum Tasch, 1964
Holotype: Tasch, 1964, pl.3, fig.8
Locus typicus: Clark County, Kansas, U.S.A.
Stratum typicum: Albian
Original diagnosis: Tasch, 1964, p.194
Subovate shell characterized by an inner ring of pointed protuberances that arise from a clearly defined inner band terminating in a small knob or neck. Exterior to this band, there is a fringe area, the surface and periphery of which bears flexible, curved, bifurcate or pointed processes.
Dimensions: Holotype: Maximum diameter of shell 46 Ám; maximum diameter of inner band 38 Ám; thickness of inner band 1.5 Ám; length of processes 8-14 Ám; thickness of processes, measured at base 2 Ám; density of processes 1.5 per 5 Ám of edge.