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Piccoladinium
From Williams et al., 2017:
[Piccoladinium, Versteegh and Zevenboom, 1995, p. 91
Type species: Piccoladinium fenestratum, Versteegh and Zevenboom, 1995 (pl.4, figs.1,4)]
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Original description: [Versteegh and Zevenboom, 1995]:
Diagnosis:
Gonyaulacoid, S-type, cavate cysts which have their periphragm and endophragm only connected dorsally. Apart from this dorsal area the endophragm is completely enveloped by the periphragm.
Tabulation on the periphragm is reflected by sutural septa.
The archaeopyle is formed by the loss of plate 3``.
Affinities:
This genus differs from Lophocysta Manum, 1979 by having endo- and periphragm connected dorsally in stead of ventrally.
It differs from Gelatia Bujak, 1984 by having a complete ventral periphragm and from Evittosphaerula Manum, 1979 in having an endophragm.
Piccoladinium differs from Hapsocysta Davey, 1979 in having apical plate series and from Hapsidaulax Sarjeant, 1975 by having cingular plate series.
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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.
Piccoladinium Versteegh and Zevenboom in Versteegh, 1995.
Diagnosis: Gonyaulacoid, S-type, cavate cysts which have their periphragm and endophragm only connected dorsally. Apart from this dorsal area the endophragm is completely enveloped by the periphragm. Tabulation on the periphragm is reflected by sutural septa. The archeopyle is formed from the loss of 3". This genus differs from Lophocysta by having the endo- and periphragm connected dorsally instead of ventrally. It differs from Gelatia by having a complete ventral periphragm and from Evittosphaerula in having an endophragm. Piccoladinium differs from Hapsocysta in having apical plate series and from Hapsidaulax in having a cingular plate series.
[Piccoladinium, Versteegh and Zevenboom, 1995, p. 91
Type species: Piccoladinium fenestratum, Versteegh and Zevenboom, 1995 (pl.4, figs.1,4)]
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Original description: [Versteegh and Zevenboom, 1995]:
Diagnosis:
Gonyaulacoid, S-type, cavate cysts which have their periphragm and endophragm only connected dorsally. Apart from this dorsal area the endophragm is completely enveloped by the periphragm.
Tabulation on the periphragm is reflected by sutural septa.
The archaeopyle is formed by the loss of plate 3``.
Affinities:
This genus differs from Lophocysta Manum, 1979 by having endo- and periphragm connected dorsally in stead of ventrally.
It differs from Gelatia Bujak, 1984 by having a complete ventral periphragm and from Evittosphaerula Manum, 1979 in having an endophragm.
Piccoladinium differs from Hapsocysta Davey, 1979 in having apical plate series and from Hapsidaulax Sarjeant, 1975 by having cingular plate series.
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Notes:
G.L. Williams short notes on species, Mesozoic-Cenozoic dinocyst course, Urbino, Italy, May 17-22, 1999 - LPP VIEWER CD-ROM 99.5.
Piccoladinium Versteegh and Zevenboom in Versteegh, 1995.
Diagnosis: Gonyaulacoid, S-type, cavate cysts which have their periphragm and endophragm only connected dorsally. Apart from this dorsal area the endophragm is completely enveloped by the periphragm. Tabulation on the periphragm is reflected by sutural septa. The archeopyle is formed from the loss of 3". This genus differs from Lophocysta by having the endo- and periphragm connected dorsally instead of ventrally. It differs from Gelatia by having a complete ventral periphragm and from Evittosphaerula in having an endophragm. Piccoladinium differs from Hapsocysta in having apical plate series and from Hapsidaulax in having a cingular plate series.