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Gramocysta
From Williams et al., 2017:
[Gramocysta, Lund and Lund-Christensen in Daniels et al., 1990, p. 34
Type species: originally as Dinopterygium verricula, Piasecki, 1980 (pl.1, figs.7–8)] ; Gramocysta verricula, Lund and Lund-Christensen in Daniels et al., 1990
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Original description: [Lund and Lund-Christensen, 1990]:
Diagnosis:
Subspherical to subpolyhedral holocavate cysts with epicystal archeopyle where a varying number of the precingular paraplates may remain attached to the hypocyst. Paratabulation gonyaulacacean indicated by low to medium high more or less camocavate parasutural sentae.
Affinities:
Gramocysta differs from the Jurassic genus Mancodinium through its holocavate wall structure. Gramocysta differs from Dinopterygium and Heteraulacacysta by its holocavate wall structure and by the archeopyle falling apart in several pieces.
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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.
Gramocysta Lund and Lund-Christensen in Daniels et al., 1990. According to Lund and Lund-Christensen in Daniels et al. (1990), Gramocysta is a subspherical to subpolyhedral, holocavate cyst, with an epicystal archeopyle in which a variable number of precingular paraplates may remain attached to the hypocyst. Paratabulation gonyaulacacean indicated by low to medium height, more or less camocavate parasutural septa. The holocavate wall is made up of an inner layer (autophragm) and an outer layer (ectophragm) separated by platy structures perpendicular between the two layers. The platy structures form a reticulate or microreticulate pattern. Most specimens lose all their precingulars.
[Gramocysta, Lund and Lund-Christensen in Daniels et al., 1990, p. 34
Type species: originally as Dinopterygium verricula, Piasecki, 1980 (pl.1, figs.7–8)] ; Gramocysta verricula, Lund and Lund-Christensen in Daniels et al., 1990
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Original description: [Lund and Lund-Christensen, 1990]:
Diagnosis:
Subspherical to subpolyhedral holocavate cysts with epicystal archeopyle where a varying number of the precingular paraplates may remain attached to the hypocyst. Paratabulation gonyaulacacean indicated by low to medium high more or less camocavate parasutural sentae.
Affinities:
Gramocysta differs from the Jurassic genus Mancodinium through its holocavate wall structure. Gramocysta differs from Dinopterygium and Heteraulacacysta by its holocavate wall structure and by the archeopyle falling apart in several pieces.
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Notes:
G.L. Williams short notes on species, Mesozoic-Cenozoic dinocyst course, Urbino, Italy, May 17-22, 1999 - LPP VIEWER CD-ROM 99.5.
Gramocysta Lund and Lund-Christensen in Daniels et al., 1990. According to Lund and Lund-Christensen in Daniels et al. (1990), Gramocysta is a subspherical to subpolyhedral, holocavate cyst, with an epicystal archeopyle in which a variable number of precingular paraplates may remain attached to the hypocyst. Paratabulation gonyaulacacean indicated by low to medium height, more or less camocavate parasutural septa. The holocavate wall is made up of an inner layer (autophragm) and an outer layer (ectophragm) separated by platy structures perpendicular between the two layers. The platy structures form a reticulate or microreticulate pattern. Most specimens lose all their precingulars.