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Kenleyia
From Fensome et al., 2019:
Kenleyia, Cookson and Eisenack, 1965b, p.135–136.
Type: Cookson and Eisenack, 1965b, pl.17, fig.3, as Kenleyia pachycerata.
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Original description: [Cookson and Eisenack, 1965]:
Description:
Shell small, apparently untabulated, oval to almost circular in outline, usually equally divided by a more or less clearly defined girdle, and with one to three solid projections at and adjacent to both apex and antapex of which, when all three are present, the middle one is the most prominent.
Shell wall 2-layered, the inner layer thin and homogeneous, the outer of variable width and construction, from densely or loosely granular to finely lace-like or fibrillose. The apical and antapical projections or horns, and those indicating the lateral position of the girdle, when evident, are derived from this layer.
The archeopyle is large and extends from just behind the apex of the dorsal surface to the girdle.
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Modified description:
Stover and Evitt, 1978, p. 166-167:
Synopsis:
Cysts proximochorate; body subspherical to ellipsoidal, bearing isolated, poorly delimited, usually low processes or lamellar structures, and with a short to long hornlike protrusion at each pole; paratabulation indicated mainly by archeopyle, less so by processes and lamellar features. Archeopyle precingular, Type P.
Description:
Shape: Body subspherical to ellipsoidal with short to long hornlike protrusions at each pole.
Wall relationships: Normally autophragm only; occasionally two appressed layers discernible.
Wall Features: Fibrous, discontinuous lamellar structures, which appear to be parasutural; at least some of the poorly delimited, tuftlike, fibrous processes or low projections are gonal. A short to long hornlike projection usually occurs at each pole. Autophragm fibrous and has a granular to punctoreticulate surface.
Paratabulation: Indicated mainly by archeopyle and to a lesser extent by the individual surface features; probably gonyaulacacean, formula unknown.
Archeopyle: Precingular, Type P (3`` only, apparently enlarged); operculum free.
Paracingulum: Indicated by one or two closely spaced, relatively low, transverse ridges.
Parasulcus: Not expressed.
Size: Intermediate.
Affinities:
Kenleyia differs from Amphorosphaeridium, Cordosphaeridium, and Fibrocysta - all of which have fibrous processes and precingular archeopyles - in having low, poorly delimited, tuftlike projections or lamellar structures rather than more or less distinct and generally long processes.
Kenleyia, Cookson and Eisenack, 1965b, p.135–136.
Type: Cookson and Eisenack, 1965b, pl.17, fig.3, as Kenleyia pachycerata.
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Original description: [Cookson and Eisenack, 1965]:
Description:
Shell small, apparently untabulated, oval to almost circular in outline, usually equally divided by a more or less clearly defined girdle, and with one to three solid projections at and adjacent to both apex and antapex of which, when all three are present, the middle one is the most prominent.
Shell wall 2-layered, the inner layer thin and homogeneous, the outer of variable width and construction, from densely or loosely granular to finely lace-like or fibrillose. The apical and antapical projections or horns, and those indicating the lateral position of the girdle, when evident, are derived from this layer.
The archeopyle is large and extends from just behind the apex of the dorsal surface to the girdle.
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Modified description:
Stover and Evitt, 1978, p. 166-167:
Synopsis:
Cysts proximochorate; body subspherical to ellipsoidal, bearing isolated, poorly delimited, usually low processes or lamellar structures, and with a short to long hornlike protrusion at each pole; paratabulation indicated mainly by archeopyle, less so by processes and lamellar features. Archeopyle precingular, Type P.
Description:
Shape: Body subspherical to ellipsoidal with short to long hornlike protrusions at each pole.
Wall relationships: Normally autophragm only; occasionally two appressed layers discernible.
Wall Features: Fibrous, discontinuous lamellar structures, which appear to be parasutural; at least some of the poorly delimited, tuftlike, fibrous processes or low projections are gonal. A short to long hornlike projection usually occurs at each pole. Autophragm fibrous and has a granular to punctoreticulate surface.
Paratabulation: Indicated mainly by archeopyle and to a lesser extent by the individual surface features; probably gonyaulacacean, formula unknown.
Archeopyle: Precingular, Type P (3`` only, apparently enlarged); operculum free.
Paracingulum: Indicated by one or two closely spaced, relatively low, transverse ridges.
Parasulcus: Not expressed.
Size: Intermediate.
Affinities:
Kenleyia differs from Amphorosphaeridium, Cordosphaeridium, and Fibrocysta - all of which have fibrous processes and precingular archeopyles - in having low, poorly delimited, tuftlike projections or lamellar structures rather than more or less distinct and generally long processes.