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Cleistosphaeridium sarmentum
Cleistosphaeridium sarmentum, Stancliffe, 1991
Holotype: Stancliffe, 1991, pl.1, figs.1-2, text-figs.5A-B
Locus typicus: Isle of Skye, Scottland
Stratum typicum: Late Oxfordian
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Original description: [Stancliffe, 1991, p. 187]:
Diagnosis:
Skolochorate cyst with a subspherical body; wall smooth to slightly granular. Processes isolated, non tabular, 28-40 in number, cover the body and are long (half to third of body width), hollow, generally straight, gently tapering distally and have slightly granular walls. Proximally the processes flare at the contact with the body but do not communicate with it. Distally the processes flare briefly at their tips, appear closed and have up to seven distal spines radiating from the process tip.
Archeopyle apical with or without an attached operculum.
Dimensions:
body length (no operc.) 26-37 µm
body breadth 26-36 µm
length of processes 10-19 µm
number of processes 26-36
Affinities: (p. 188):
The species is differentiated from C.? tribuliferum by its smaller number of processes, more complex distal spine morphology and the relatively shorter process length as compared to the body width. No other species of Cleistosphaeridium has a similar combination of features. Hystrichosphaeridium petilum Gitmez 1970 has fewer processes which are intra tabular.
Holotype: Stancliffe, 1991, pl.1, figs.1-2, text-figs.5A-B
Locus typicus: Isle of Skye, Scottland
Stratum typicum: Late Oxfordian
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Original description: [Stancliffe, 1991, p. 187]:
Diagnosis:
Skolochorate cyst with a subspherical body; wall smooth to slightly granular. Processes isolated, non tabular, 28-40 in number, cover the body and are long (half to third of body width), hollow, generally straight, gently tapering distally and have slightly granular walls. Proximally the processes flare at the contact with the body but do not communicate with it. Distally the processes flare briefly at their tips, appear closed and have up to seven distal spines radiating from the process tip.
Archeopyle apical with or without an attached operculum.
Dimensions:
body length (no operc.) 26-37 µm
body breadth 26-36 µm
length of processes 10-19 µm
number of processes 26-36
Affinities: (p. 188):
The species is differentiated from C.? tribuliferum by its smaller number of processes, more complex distal spine morphology and the relatively shorter process length as compared to the body width. No other species of Cleistosphaeridium has a similar combination of features. Hystrichosphaeridium petilum Gitmez 1970 has fewer processes which are intra tabular.