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Hystrichosphaeridium collum
Hystrichosphaeridium collum Tasch, 1964
Stover and Evitt, 1978, considered this to be a problematical species of Hystrichosphaeridium.
Holotype: Tasch et al., 1964, pl.2, figs.7,16; Fauconnier and Masure, 2004, pl.43, figs.11-12.
Locus typicus: Clark County, Kansas, USA
Stratum typicum: Albian
Original diagnosis: Tasch, 1964, p.194
Globular configuration, with narrow, apical, tubular neck, from the end of which flagellate extensions merge with surrounding membrane; short, seta-like, tubular processes; a scalloped peripheral effect due to barblike processes.
Dimensions: Holotype: Length (maximum), excluding membrane 32 Ám; width (maximum), excluding membrane 38 Ám; length of neck 6 Ám; length of flagella 50 Ám; maximum width of membrane 28 Ám; length of processes 3-6 Ám.
Stover and Evitt, 1978, considered this to be a problematical species of Hystrichosphaeridium.
Holotype: Tasch et al., 1964, pl.2, figs.7,16; Fauconnier and Masure, 2004, pl.43, figs.11-12.
Locus typicus: Clark County, Kansas, USA
Stratum typicum: Albian
Original diagnosis: Tasch, 1964, p.194
Globular configuration, with narrow, apical, tubular neck, from the end of which flagellate extensions merge with surrounding membrane; short, seta-like, tubular processes; a scalloped peripheral effect due to barblike processes.
Dimensions: Holotype: Length (maximum), excluding membrane 32 Ám; width (maximum), excluding membrane 38 Ám; length of neck 6 Ám; length of flagella 50 Ám; maximum width of membrane 28 Ám; length of processes 3-6 Ám.