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Pilosidinium capillatum
Pilosidinium capillatum (Davey, 1975, p.155–156, pl.2, figs.4,7) Courtinat in Fauconnier and Masure, 2004, p.448. Holotype: Davey, 1975, pl.2, fig.7. Originally Tenua Eisenack, subsequently Sentusidinium, thirdly (and now) Pilosidinium. Age: Senonian (?Campanian).
Original diagnosis: Davey, 1975, p.155: Tenua capillata
The cyst is subspherical in outline and is covered by numerous hair-like intratabular spines. m e cyst wall is of moderate thickness and is smooth. m e spines are solid, relatively flexuous and taper distally; their distal termination is pointed or slightly truncated. The angular apical archaeopyle is rarely obvious since the operculum usually remains attached. When the operculum is detached sutural breakages occur between the precingular plates.
Dimensions.Holotype Paratype Range
Diameter of central body 63x61 µm 54x47 µm 46(57)63 µm
Length of spines 2-4 µm 5-9 µm 2-9 µm
Original description: Davey, 1975, p.156: Tenua capillata
A slight thickening of the cyst wall at the base of each spine gives the cyst surface a tuberculated appearance. Spine alignment and apical/antapical structures are absent.
Original diagnosis: Davey, 1975, p.155: Tenua capillata
The cyst is subspherical in outline and is covered by numerous hair-like intratabular spines. m e cyst wall is of moderate thickness and is smooth. m e spines are solid, relatively flexuous and taper distally; their distal termination is pointed or slightly truncated. The angular apical archaeopyle is rarely obvious since the operculum usually remains attached. When the operculum is detached sutural breakages occur between the precingular plates.
Dimensions.Holotype Paratype Range
Diameter of central body 63x61 µm 54x47 µm 46(57)63 µm
Length of spines 2-4 µm 5-9 µm 2-9 µm
Original description: Davey, 1975, p.156: Tenua capillata
A slight thickening of the cyst wall at the base of each spine gives the cyst surface a tuberculated appearance. Spine alignment and apical/antapical structures are absent.