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Fibrocysta fusiforma
From Fensome et al., 2019:
Fibrocysta? fusiforma Edwards, 1984, p.585, pl.4, figs.2–3a–b. Holotype: Edwards, 1984, pl.4, fig.2. Questionable assignment: Edwards (1984, p.585). Age: Late Miocene.
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Original description: Edwards, 1984, p. 585.
Diagnosis: Cyst fusiform, autophragm only; surface smooth with many (15-40), smooth nontabular processes; paratabulation presumably gonyaulacacean, indicated by pentagonal 3"" precingular archeopyle and faint alignment of processes in paracingular region; operculum free; dimensions of holotype, length 75 µm, width 47 µm, processes 10-13 µm.
Description (annotated): Cyst fusiform, with elongate rounded protrusion at apex, pointed nubbin, with or without additional spine at antapex; wall thin, autophragm only, surface smooth with 15-40 (typically 20-30) smooth nontabular processes; processes are typically acuminate, may be bifid, especially at paracingulum; processes hollow at bases, probably solid distally, paratabulation presumably gonyaulacacean, indicated by archeopyle and faint alignment of processes at paracingular region; archeopyle five-sided, type P, 3"" only, operculum free.
Dimensions: Length, average 73 µm, range 65-81 µm; width, average 41 µm, range 35-52 µm; length of spines, 7-13 µm 16 specimens measured.
Remarks: This species is provisionally placed in Fibrocysta because the processes and the autophragm are smooth rather than fibrous.
Fibrocysta? fusiforma Edwards, 1984, p.585, pl.4, figs.2–3a–b. Holotype: Edwards, 1984, pl.4, fig.2. Questionable assignment: Edwards (1984, p.585). Age: Late Miocene.
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Original description: Edwards, 1984, p. 585.
Diagnosis: Cyst fusiform, autophragm only; surface smooth with many (15-40), smooth nontabular processes; paratabulation presumably gonyaulacacean, indicated by pentagonal 3"" precingular archeopyle and faint alignment of processes in paracingular region; operculum free; dimensions of holotype, length 75 µm, width 47 µm, processes 10-13 µm.
Description (annotated): Cyst fusiform, with elongate rounded protrusion at apex, pointed nubbin, with or without additional spine at antapex; wall thin, autophragm only, surface smooth with 15-40 (typically 20-30) smooth nontabular processes; processes are typically acuminate, may be bifid, especially at paracingulum; processes hollow at bases, probably solid distally, paratabulation presumably gonyaulacacean, indicated by archeopyle and faint alignment of processes at paracingular region; archeopyle five-sided, type P, 3"" only, operculum free.
Dimensions: Length, average 73 µm, range 65-81 µm; width, average 41 µm, range 35-52 µm; length of spines, 7-13 µm 16 specimens measured.
Remarks: This species is provisionally placed in Fibrocysta because the processes and the autophragm are smooth rather than fibrous.