Back
Polystephanosphaera
From Fensome et al., 2019:
"Polystephanosphaera", Sarjeant, 1960a, p.140–142.
Taxonomic senior synonym: Systematophora, according to Sarjeant (1961b, p.1095–1096).
Taxonomic junior synonym: Surculosphaeridium, by implication in Courtinat (1989, p.173), who considered the "type species", Polystephanosphaera valensii to be a taxonomic junior synonym of Hystrichosphaeridium (as and now Surculosphaeridium) vestitum -- however, Stancliffe and Sarjeant (1990, p.207–208) retained the two species, as well as the genus Surculosphaeridium.
Type: Sarjeant, 1960a, pl.6, fig.4; text-fig.3b, as Polystephanosphaera valensii.
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Original description: [Sarjeant, 1960]:
Diagnosis:
Shell sphaeroidal, bearing processes of variable character but always solid or with closed tips, whose points of origin are arranged in rings. The bases of adjacent processes may be coalescent: and adjacent processes may linked by traberculae at points along their length or at their tip, all processes of each ring sometimes being linked together by a single traberculae.
"Polystephanosphaera", Sarjeant, 1960a, p.140–142.
Taxonomic senior synonym: Systematophora, according to Sarjeant (1961b, p.1095–1096).
Taxonomic junior synonym: Surculosphaeridium, by implication in Courtinat (1989, p.173), who considered the "type species", Polystephanosphaera valensii to be a taxonomic junior synonym of Hystrichosphaeridium (as and now Surculosphaeridium) vestitum -- however, Stancliffe and Sarjeant (1990, p.207–208) retained the two species, as well as the genus Surculosphaeridium.
Type: Sarjeant, 1960a, pl.6, fig.4; text-fig.3b, as Polystephanosphaera valensii.
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Original description: [Sarjeant, 1960]:
Diagnosis:
Shell sphaeroidal, bearing processes of variable character but always solid or with closed tips, whose points of origin are arranged in rings. The bases of adjacent processes may be coalescent: and adjacent processes may linked by traberculae at points along their length or at their tip, all processes of each ring sometimes being linked together by a single traberculae.