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Hystrichodinium infundibulum
Hystrichodinium? infundibulum Jain, Sah and Singh, 1975
Originally Hystrichodinium, subsequently (and now) Hystrichodinium?.
Stover and Evitt, 1978, considered this to be a provisionally accepted species of Hystrichodinium.
Holotype: Jain, Sah and Singh, 1975, pl.3, fig.35
Locus typicus: Assam, India
Stratum typicum: Maastrichtian
Original diagnosis: Jain, Sah and Singh, 1975, p.11
Cyst ovoidal, girdle indistinct to sometimes distinct, epi- and hypotheca ¦ equal in size, with rounded apex; surface ornamented with hollow processes, mostly arranged at poles and long transverse girdle margin. Apical processes conical, blunt or bifid; antapical processes infundibular with recurved or blunt terminations. Surface of processes granular. Archaeopyle precingular; tabulation indistinct.
Dimensions:
HolotypeRange
Shell size (excluding processes)440x50 Ám40-50x50-65 Ám
Length of processes14-20 Ám14-20 Ám
Width of cingulum4-6 Ám4-6 Ám
Originally Hystrichodinium, subsequently (and now) Hystrichodinium?.
Stover and Evitt, 1978, considered this to be a provisionally accepted species of Hystrichodinium.
Holotype: Jain, Sah and Singh, 1975, pl.3, fig.35
Locus typicus: Assam, India
Stratum typicum: Maastrichtian
Original diagnosis: Jain, Sah and Singh, 1975, p.11
Cyst ovoidal, girdle indistinct to sometimes distinct, epi- and hypotheca ¦ equal in size, with rounded apex; surface ornamented with hollow processes, mostly arranged at poles and long transverse girdle margin. Apical processes conical, blunt or bifid; antapical processes infundibular with recurved or blunt terminations. Surface of processes granular. Archaeopyle precingular; tabulation indistinct.
Dimensions:
HolotypeRange
Shell size (excluding processes)440x50 Ám40-50x50-65 Ám
Length of processes14-20 Ám14-20 Ám
Width of cingulum4-6 Ám4-6 Ám