Back
Bradleyella
From Fensome et al., 2019:
Bradleyella, Woollam, 1983, p.194.
Type: Fenton et al., 1980, pl.14, fig.3; text-figs.3A–B, as Dichadogonyaulax adela.
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Original description: [Woolham, 1983]:
Diagnosis:
Cysts proximate, autophragm only. Body ellipsoidal, lacking an apical horn. Epicyst small, hypocyst large. Paratabulation indistinct gonyaulacoid, 4`, 6", 6c, xs, ?5```, 1````, indicated by simple parasutural lines, low rounded ridges or rarely by alignment of low granules. Parasutures preferentially developed on epicyst. Archeopyle epicystal, formed by schism along a line anterior to the paracingulum, initiated dorsally, operculum (epicyst) attached ventrally at the parasulcus.
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Modified description:
Stover and Williams, 1987, p. 43:
Synopsis:
Cysts proximate, ellipsoidal; epicyst smaller than hypocyst; gonyaulacacean paratabulation indicated incompletely by low parasutural features; formula: 4`, ?2a, 6", 6c, ?5"`, 1""; paraplate lp not indicated; archeopyle type [tAtP]@.
Description:
Shape: Ellipsoidal; epicyst smaller than hypocyst.
Wall relationships: Autophragm only.
Wall features: Parasutural features are low, rounded ridges, or rows of low granules, or simple lines.
Archeopyle: Epicystal, combined apical and precingular, type [tAtP]@; the adnate operculum consists of a single piece.
Paratabulation: Indicated by parasutural features, gonyaulacacean, formula: 4`, ?2a, 6", 6c, 5```,1````; paratabulation may be indistinct, especially on
the hypocyst, 1p not indicated.
Paracingulum: Indicated paraplates delimited by faint parasutural features.
Parasulcus: Apparently indicated by undivided midventral longitudinal area.
Size: Small, about 45 µm in length.
Affinities:
Woollam (1983, p. 194) considered the absence of a posterior intercalary paraplate, the indistinct paratabulation, particularly on the hypocyst, and the overall morphology (not specified) to be features which distinguish Bradleyella from Ctenidodinium Deflandre 1938 emended Woollam 1983 and also from Korystocysta Woollam 1983.
Bradleyella, Woollam, 1983, p.194.
Type: Fenton et al., 1980, pl.14, fig.3; text-figs.3A–B, as Dichadogonyaulax adela.
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Original description: [Woolham, 1983]:
Diagnosis:
Cysts proximate, autophragm only. Body ellipsoidal, lacking an apical horn. Epicyst small, hypocyst large. Paratabulation indistinct gonyaulacoid, 4`, 6", 6c, xs, ?5```, 1````, indicated by simple parasutural lines, low rounded ridges or rarely by alignment of low granules. Parasutures preferentially developed on epicyst. Archeopyle epicystal, formed by schism along a line anterior to the paracingulum, initiated dorsally, operculum (epicyst) attached ventrally at the parasulcus.
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Modified description:
Stover and Williams, 1987, p. 43:
Synopsis:
Cysts proximate, ellipsoidal; epicyst smaller than hypocyst; gonyaulacacean paratabulation indicated incompletely by low parasutural features; formula: 4`, ?2a, 6", 6c, ?5"`, 1""; paraplate lp not indicated; archeopyle type [tAtP]@.
Description:
Shape: Ellipsoidal; epicyst smaller than hypocyst.
Wall relationships: Autophragm only.
Wall features: Parasutural features are low, rounded ridges, or rows of low granules, or simple lines.
Archeopyle: Epicystal, combined apical and precingular, type [tAtP]@; the adnate operculum consists of a single piece.
Paratabulation: Indicated by parasutural features, gonyaulacacean, formula: 4`, ?2a, 6", 6c, 5```,1````; paratabulation may be indistinct, especially on
the hypocyst, 1p not indicated.
Paracingulum: Indicated paraplates delimited by faint parasutural features.
Parasulcus: Apparently indicated by undivided midventral longitudinal area.
Size: Small, about 45 µm in length.
Affinities:
Woollam (1983, p. 194) considered the absence of a posterior intercalary paraplate, the indistinct paratabulation, particularly on the hypocyst, and the overall morphology (not specified) to be features which distinguish Bradleyella from Ctenidodinium Deflandre 1938 emended Woollam 1983 and also from Korystocysta Woollam 1983.