Back
Hystrichosphaerina orbifera
Hystrichosphaerina orbifera (Klement, 1960) Stover and Evitt, 1978
Now Systematophora. Originally (and now) Systematophora, subsequently Hystrichosphaerina.
Brenner, 1988, and Stancliffe and Sarjeant, 1990, retained this species in Systematophora Klement, 1960.
Holotype: Klement, 1960, pl.9, fig.9; Stancliffe and Sarjeant, 1990, pl.5, fig.2
Paratypes: Klement, 1960
Locus typicus: Lõngental 2 Bore
Stratum typicum: Middle Oxfordian
Original diagnosis: Klement, 1960, p. 66: Systematophora orbifera
A species of the genus Systematophora with the, for the type species S. areolata characteristical, oriented arrangement and number of circular areas of the basal process connections. Shell spheroidal to squatly ellipsoidal. Cricularly arranged processes numerous and closely spaced, relatively long, fibrous to firm, often bent in a wavy fashion, distally fused into a characteritical tire shape.
Dimensions: Holotype: shell including processes l:b 100:100 Ám, shell without processes l:b 60:58 Ám, process length 28 Ám.
Affinities: Klement, 1960, p.67: Systematophora orbifera
This species is unambiguously distinguished from from the related S. fasciculigera, by the pronounced spheroidal appearance of the shell, as opposed to the elongate oval outline of the latter species, and by the characteristical, tire-shaped distal coalescence of its processes.
Now Systematophora. Originally (and now) Systematophora, subsequently Hystrichosphaerina.
Brenner, 1988, and Stancliffe and Sarjeant, 1990, retained this species in Systematophora Klement, 1960.
Holotype: Klement, 1960, pl.9, fig.9; Stancliffe and Sarjeant, 1990, pl.5, fig.2
Paratypes: Klement, 1960
Locus typicus: Lõngental 2 Bore
Stratum typicum: Middle Oxfordian
Original diagnosis: Klement, 1960, p. 66: Systematophora orbifera
A species of the genus Systematophora with the, for the type species S. areolata characteristical, oriented arrangement and number of circular areas of the basal process connections. Shell spheroidal to squatly ellipsoidal. Cricularly arranged processes numerous and closely spaced, relatively long, fibrous to firm, often bent in a wavy fashion, distally fused into a characteritical tire shape.
Dimensions: Holotype: shell including processes l:b 100:100 Ám, shell without processes l:b 60:58 Ám, process length 28 Ám.
Affinities: Klement, 1960, p.67: Systematophora orbifera
This species is unambiguously distinguished from from the related S. fasciculigera, by the pronounced spheroidal appearance of the shell, as opposed to the elongate oval outline of the latter species, and by the characteristical, tire-shaped distal coalescence of its processes.