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Galeacysta etrusca
Galeacysta etrusca Corradini and Biffi, 1988
Holotype: Corradini and Biffi, 1988, pl.1, figs.4–5; Fensome et al., 1993a, figs.1–2 — p.1151.
Locus typicus: Cava Serredi, Tuscany, Italy
Stratum typicum: Late Miocene (Messinian)
Translation Corradini and Biffi, 1988: LPP
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G.L. Williams short notes on species, Mesozoic-Cenozoic dinocyst course, Urbino, Italy, May 17-22, 1999 - LPP VIEWER CD-ROM 99.5.
Galeacysta etrusca Corradini and Biffi, 1988. The perforations in the periphragm occur in pandasutural bands, with the large intratabular claustra indicating the paraplates. According to Corradini and Biffi (1988, p.225-226), the antapical plate is quinqueform. Size: pericyst in dorso-ventral view 70-90 x 70-100 µm, pericyst in lateral view 70-90 x 74-90 µm, endocyst 46-58 x 62-70 µm.
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Original description: Corradini and Biffi, 1988, p. 225-22
The endophragm and periphragm of this camocavate cyst are appressed dorsally, but clearly separated in the ventral area. The periphragm is more or less detached, giving the cyst the form of a helmet. The endocyst is generally ellipsoidal, the endophragm smooth and without indications of paratabulation. The periphragm is smooth to finely granulate, irregularly perforate or fenestrate; the perforations involve the parasutural bands, while large intratabular claustra indicate the paraplates; for, the claustra are only developed where the periphragm is detached from the endophragm. The gonyaulacoid paratabulation is also stressed by parasutural folds of the periphragm. Some specimens show the presence of apical paraplates with an <> organisation (Evitt, 1985). The precingular, cingular and postcingular paraplates are well-developed and distinct. 1'''' seems to be quinqueform and ps and p can be recognized. The paratabulation formula is: 4', 6'', 1''' (sic, should be 6'''?), 1ps, 1p, 1''''. The actual sulcal area is characterized by the absence of the periphragm and the paratabulation there is unknown. The archaeopyle is precingular, P(3''), the operculum is free.
Holotype: Corradini and Biffi, 1988, pl.1, figs.4–5; Fensome et al., 1993a, figs.1–2 — p.1151.
Locus typicus: Cava Serredi, Tuscany, Italy
Stratum typicum: Late Miocene (Messinian)
Translation Corradini and Biffi, 1988: LPP
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G.L. Williams short notes on species, Mesozoic-Cenozoic dinocyst course, Urbino, Italy, May 17-22, 1999 - LPP VIEWER CD-ROM 99.5.
Galeacysta etrusca Corradini and Biffi, 1988. The perforations in the periphragm occur in pandasutural bands, with the large intratabular claustra indicating the paraplates. According to Corradini and Biffi (1988, p.225-226), the antapical plate is quinqueform. Size: pericyst in dorso-ventral view 70-90 x 70-100 µm, pericyst in lateral view 70-90 x 74-90 µm, endocyst 46-58 x 62-70 µm.
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Original description: Corradini and Biffi, 1988, p. 225-22
The endophragm and periphragm of this camocavate cyst are appressed dorsally, but clearly separated in the ventral area. The periphragm is more or less detached, giving the cyst the form of a helmet. The endocyst is generally ellipsoidal, the endophragm smooth and without indications of paratabulation. The periphragm is smooth to finely granulate, irregularly perforate or fenestrate; the perforations involve the parasutural bands, while large intratabular claustra indicate the paraplates; for, the claustra are only developed where the periphragm is detached from the endophragm. The gonyaulacoid paratabulation is also stressed by parasutural folds of the periphragm. Some specimens show the presence of apical paraplates with an <