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Spiniferites granulatus
Spiniferites granulatus (Davey, 1969) Lentin and Williams, 1973
Junior homonym: Spiniferites granulatus Cookson and Eisenack, 1974.
Originally Hystrichosphaera, subsequently (and now) Spiniferites.
Holotype: Davey, 1969, pl.1, fig.4-7
Locus typicus: Northern Natal, South Africa
Stratum typicum: Maastrichtian-?Danian
Original diagnosis: Davey, 1969, p.4: Hystrichosphaera granulata
A species of Hystrichosphaera with outer layer of central body densely granular; crests and processes also granular, particularly proximally. Processes are gonal in position and delicate; sutural crests low.
Holotype: central body diameter 32x37 µm, length of spines 10-11 µm. Range: central body diameter 27(35.6)43 µm, maximum length of processes 8(11.7)18 µm. Number of specimens measured, 12.
Original description: Davey, 1969, p.4: Hystrichosphaera granulata
This species has an ovoidal test, always of a brown colour in the type material, sometimes with a small apical prominence. The wall is of a moderate thickness (c.1 µm) and has a densely granular surface. The processes are slender, bifurcate medially and normal again distally. The cingular and, more rarely other processes are joined medially by a fine membrane. A trifurcate apical process may be present. The tabulation is distinct, except for the sulcal region, and is typical of the genus.
Affinities:
Davey, 1969, p.5: Hystrichosphaera granulata
The brown, densely granular test wall and delicate processes of H. granulata make this a readily distinguishable species. It may be compared with H. ramosa var. ramosa Davey and Williams which, however, has longer nongranular processes; the test wall of H. scabrosa Clarke and Verdier possesses rugae or scabrae, not granules.
Junior homonym: Spiniferites granulatus Cookson and Eisenack, 1974.
Originally Hystrichosphaera, subsequently (and now) Spiniferites.
Holotype: Davey, 1969, pl.1, fig.4-7
Locus typicus: Northern Natal, South Africa
Stratum typicum: Maastrichtian-?Danian
Original diagnosis: Davey, 1969, p.4: Hystrichosphaera granulata
A species of Hystrichosphaera with outer layer of central body densely granular; crests and processes also granular, particularly proximally. Processes are gonal in position and delicate; sutural crests low.
Holotype: central body diameter 32x37 µm, length of spines 10-11 µm. Range: central body diameter 27(35.6)43 µm, maximum length of processes 8(11.7)18 µm. Number of specimens measured, 12.
Original description: Davey, 1969, p.4: Hystrichosphaera granulata
This species has an ovoidal test, always of a brown colour in the type material, sometimes with a small apical prominence. The wall is of a moderate thickness (c.1 µm) and has a densely granular surface. The processes are slender, bifurcate medially and normal again distally. The cingular and, more rarely other processes are joined medially by a fine membrane. A trifurcate apical process may be present. The tabulation is distinct, except for the sulcal region, and is typical of the genus.
Affinities:
Davey, 1969, p.5: Hystrichosphaera granulata
The brown, densely granular test wall and delicate processes of H. granulata make this a readily distinguishable species. It may be compared with H. ramosa var. ramosa Davey and Williams which, however, has longer nongranular processes; the test wall of H. scabrosa Clarke and Verdier possesses rugae or scabrae, not granules.