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Samlandia
From Williams et al., 2017:
[Samlandia, Eisenack, 1954b, p. 76
Type species: Samlandia chlamydophora, Eisenack, 1954b (pl.11, fig.12)]
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Original description: [Eisenack, 1954]: (Translation: Stover and Evitt, 1978, p. 185):
Description:
Central body spherical to slightly elliptical, surrounded by a thin second membrane, which is connected to the inner shell by supports, whose cross sections form irregularly curved (vermiform) lines. Pylomes at pole of the ellipsoid.
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Modified description:
Stover and Evitt 1978, p. 185-186:
Synopsis: Cysts proximate, holocavate, subspherical to ellipsoidal, with or without low convex protrusions; autophragm has numerous poorly delimited processes, discontinuous ridges, or reticulate structures, which may be completely or incompletely connected distally, or covered by ectophragm; archeopyle precingular, Type P.
Description:
Shape: Subspherical to ellipsoidal; shape commonly modified by low apical and antapical convex protrusions, less commonly by paracingular protrusions as well.
Wall Relationships: Cysts holocavate; ectophragm continuous or discontinuous.
Wall Features: No parasutural features. Autophragm form numerous, fibrous, poorly delineated, generally lamellar processes, discontinuous ridges, or a reticulum. Distal ends of processes or ridges may be partly covered by ectophragm. Height of elevated features generally uniform, or nearly so; if not uniform, their height is commonly greater at the poles, less commonly so at paracingulum. Autophragm between the processes, together with ridges or muri, are smooth, punctoreticulate, or fibrous.
Paratabulation: Generally indicated by archeopyle only, occasionally also by paracingulum.
Archeopyle: Precingular, Type P (3`` only); operculum free.
Paracingulum: Vaguely indicated by equatorial protrusion or by alignment of processes.
Parasulcus: Not indicated.
Size: Intermediate to large.
Affinities:
Samlandia differs from Scriniocassis in having a simple Type P precingular archeopyle, rather than a Type 2P, or possibly Type 3P, archeopyle. Difficulty may arise in separating forms of Scriniocassis with a Type P archeopyle from those of Samlandia.
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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.
Samlandia Eisenack, 1954b. Synopsis according to Stover and Evitt (1978, p.185), cysts proximate, holocavate, subspherical to ellipsoidal with or without low convex protrusions; autophragm has numerous, poorly delimited processes, discontinuous ridges, or reticulate structures which may be completely or incompletely connected distally, or covered by a ectophragm, archeopyle precingular type P.
[Samlandia, Eisenack, 1954b, p. 76
Type species: Samlandia chlamydophora, Eisenack, 1954b (pl.11, fig.12)]
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Original description: [Eisenack, 1954]: (Translation: Stover and Evitt, 1978, p. 185):
Description:
Central body spherical to slightly elliptical, surrounded by a thin second membrane, which is connected to the inner shell by supports, whose cross sections form irregularly curved (vermiform) lines. Pylomes at pole of the ellipsoid.
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Modified description:
Stover and Evitt 1978, p. 185-186:
Synopsis: Cysts proximate, holocavate, subspherical to ellipsoidal, with or without low convex protrusions; autophragm has numerous poorly delimited processes, discontinuous ridges, or reticulate structures, which may be completely or incompletely connected distally, or covered by ectophragm; archeopyle precingular, Type P.
Description:
Shape: Subspherical to ellipsoidal; shape commonly modified by low apical and antapical convex protrusions, less commonly by paracingular protrusions as well.
Wall Relationships: Cysts holocavate; ectophragm continuous or discontinuous.
Wall Features: No parasutural features. Autophragm form numerous, fibrous, poorly delineated, generally lamellar processes, discontinuous ridges, or a reticulum. Distal ends of processes or ridges may be partly covered by ectophragm. Height of elevated features generally uniform, or nearly so; if not uniform, their height is commonly greater at the poles, less commonly so at paracingulum. Autophragm between the processes, together with ridges or muri, are smooth, punctoreticulate, or fibrous.
Paratabulation: Generally indicated by archeopyle only, occasionally also by paracingulum.
Archeopyle: Precingular, Type P (3`` only); operculum free.
Paracingulum: Vaguely indicated by equatorial protrusion or by alignment of processes.
Parasulcus: Not indicated.
Size: Intermediate to large.
Affinities:
Samlandia differs from Scriniocassis in having a simple Type P precingular archeopyle, rather than a Type 2P, or possibly Type 3P, archeopyle. Difficulty may arise in separating forms of Scriniocassis with a Type P archeopyle from those of Samlandia.
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Notes:
G.L. Williams short notes on species, Mesozoic-Cenozoic dinocyst course, Urbino, Italy, May 17-22, 1999 - LPP VIEWER CD-ROM 99.5.
Samlandia Eisenack, 1954b. Synopsis according to Stover and Evitt (1978, p.185), cysts proximate, holocavate, subspherical to ellipsoidal with or without low convex protrusions; autophragm has numerous, poorly delimited processes, discontinuous ridges, or reticulate structures which may be completely or incompletely connected distally, or covered by a ectophragm, archeopyle precingular type P.