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Tityrosphaeridium
From Williams et al., 2017:
[Tityrosphaeridium, Sarjeant, 1981, p. 120
Type species: as Hystrichosphaeridium cantharellus, Brosius, 1963 (pl.6, fig.1)]
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Original description: [Sarjeant, 1981]:
Description:
Cyst spheroidal to broadly ellipsoidal, skolochorate. Phragma two-layered, with processes typically or constantly formed by the periphragm only. Processes intratabular, essentially cylindrical in shape (solid or hollow), yet of very variable form - they may be bifid or branched and expanded distally, but are not linked by an enclosing membrane, partial or complete, or by trabeculae. The process walls are fibrous, with or without rootlike proximal extensions: parasutural or penitabular features are inconspicuous or lacking. Paratabulation gonyaulacacean, with the formula 3-4`, 6", 5-7c, 5-6```, 0-1p, 0-?5s. The cingular processes may be slender or conspicuously elongate. The antapical processes may be larger and more conspicuous than the others.
Archaeopyle precingular: operculum free.
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Notes:
G.L. Williams short notes on species, Mesozoic-Cenozoic dinocyst course, Urbino, Italy, May 17-22, 1999 - LPP VIEWER CD-ROM 99.5.
Tityrosphaeridium Sarjeant, 1981. Differs from Cordosphaeridium in having cingular processes. However, see Stover and Williams (1987, p.213).
[Tityrosphaeridium, Sarjeant, 1981, p. 120
Type species: as Hystrichosphaeridium cantharellus, Brosius, 1963 (pl.6, fig.1)]
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Original description: [Sarjeant, 1981]:
Description:
Cyst spheroidal to broadly ellipsoidal, skolochorate. Phragma two-layered, with processes typically or constantly formed by the periphragm only. Processes intratabular, essentially cylindrical in shape (solid or hollow), yet of very variable form - they may be bifid or branched and expanded distally, but are not linked by an enclosing membrane, partial or complete, or by trabeculae. The process walls are fibrous, with or without rootlike proximal extensions: parasutural or penitabular features are inconspicuous or lacking. Paratabulation gonyaulacacean, with the formula 3-4`, 6", 5-7c, 5-6```, 0-1p, 0-?5s. The cingular processes may be slender or conspicuously elongate. The antapical processes may be larger and more conspicuous than the others.
Archaeopyle precingular: operculum free.
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Notes:
G.L. Williams short notes on species, Mesozoic-Cenozoic dinocyst course, Urbino, Italy, May 17-22, 1999 - LPP VIEWER CD-ROM 99.5.
Tityrosphaeridium Sarjeant, 1981. Differs from Cordosphaeridium in having cingular processes. However, see Stover and Williams (1987, p.213).