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Fibrocysta
From Williams et al., 2017:
[Fibrocysta, Stover and Evitt, 1978, p. 155
Type species: originally as Cordosphaeridium bipolare [Cookson and Eisenack, 1965b (pl.16, fig.8)] ; Fibrocysta bipolaris, Stover and Evitt, 1978
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Original description: [Stover and Evitt, 1978]:
Synopsis:
Cysts skolochorate; body ellipsoidal with small to long hornlike protrusions, generally one at each pole; body also bears numerous solid or hollow, normally nontabular processes; paratabulation usually indicated by precingular, Type P, archaeopyle only.
Description:
Shape: Body ellipsoidal.
Wall relationships: Autophragm only.
Wall features: No parasutural features. Processes solid or hollow, fibrous, expanded slightly or branched distally, normally nontabular; arranged occasionally in poorly delimited intratabular groups or transverse rows. Apical and antapical poles, commonly with a local protrusion, which may bear a distinctively developed process. Autophragm fibrous, smooth, or faintly ornamented between processes.
Paratabulation: Usually indicated by archaeopyle only; additional indications, such as grouping or alignment of processes, generally indistinct or inconsistent.
Archaeopyle: Precingular, Type P (3`` only); operculum free.
Paracingulum: Indicated by one or two transverse equatorial rows of processes; otherwise not clearly indicated.
Parasulcus: Not indicated.
Size: Large.
Affinities:
Fibrocysta differs from Turbiosphaera in having more numerous, more slender processes, which are nontabular in contrast to the relatively wide intratabular processes on Turbiosphaera. Amphorosphaeridium also has fibrous nontabular processes, but its body lacks the apical and antapical protrusions at the poles.
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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.
Fibrocysta Stover and Evitt, 1978. From Stover and Evitt (1978). Cysts skolochorate, body ellipsoidal with small to long hornlike protrusions, generally one at each pole. Body also bears numerous solid or hollow normally nontabular processes, paratabulation usually indicated by precingular, Type P archeopyle only.
[Fibrocysta, Stover and Evitt, 1978, p. 155
Type species: originally as Cordosphaeridium bipolare [Cookson and Eisenack, 1965b (pl.16, fig.8)] ; Fibrocysta bipolaris, Stover and Evitt, 1978
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Original description: [Stover and Evitt, 1978]:
Synopsis:
Cysts skolochorate; body ellipsoidal with small to long hornlike protrusions, generally one at each pole; body also bears numerous solid or hollow, normally nontabular processes; paratabulation usually indicated by precingular, Type P, archaeopyle only.
Description:
Shape: Body ellipsoidal.
Wall relationships: Autophragm only.
Wall features: No parasutural features. Processes solid or hollow, fibrous, expanded slightly or branched distally, normally nontabular; arranged occasionally in poorly delimited intratabular groups or transverse rows. Apical and antapical poles, commonly with a local protrusion, which may bear a distinctively developed process. Autophragm fibrous, smooth, or faintly ornamented between processes.
Paratabulation: Usually indicated by archaeopyle only; additional indications, such as grouping or alignment of processes, generally indistinct or inconsistent.
Archaeopyle: Precingular, Type P (3`` only); operculum free.
Paracingulum: Indicated by one or two transverse equatorial rows of processes; otherwise not clearly indicated.
Parasulcus: Not indicated.
Size: Large.
Affinities:
Fibrocysta differs from Turbiosphaera in having more numerous, more slender processes, which are nontabular in contrast to the relatively wide intratabular processes on Turbiosphaera. Amphorosphaeridium also has fibrous nontabular processes, but its body lacks the apical and antapical protrusions at the poles.
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Notes:
G.L. Williams short notes on species, Mesozoic-Cenozoic dinocyst course, Urbino, Italy, May 17-22, 1999 - LPP VIEWER CD-ROM 99.5.
Fibrocysta Stover and Evitt, 1978. From Stover and Evitt (1978). Cysts skolochorate, body ellipsoidal with small to long hornlike protrusions, generally one at each pole. Body also bears numerous solid or hollow normally nontabular processes, paratabulation usually indicated by precingular, Type P archeopyle only.