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Andreedinium
From Williams et al., 2017:
[Andreedinium, Below, 1987a, p. 112
Type species: Andreedinium arcticum, Below, 1987a (pl.22, figs.1–3,6,8)]
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Original description: [Below, 1987]: (Translation: Fensome et al., 1991)
Diagnosis:
Vesicle/paraplate arrangement of the dinoflagellate amphiesma cop, pop, cap, 5`, 3a, 7``, 7c, 5```, 2````, as, z, y, ps; 1```` and 2```` symmetrical on both sides of the dorso-ventral plain; Cyst appearance proximate to chorate, sphaeroidal, ellipsoidal, ovaloidal, ovoidal, fusiform, peridinoidal, rounded at the poles, pointed or with an apical horn and 1-2 antapical projections or antapical horns, acavate-cavate. Wallconsists of Pedium and also additional Luxuria; surface smooth or ornamented, tabulated or nontabulated. Paratabulation formula NR PR/cop, pop, cap, NR`/5`, NRa`3a, NR``/7``, NRc/Xc/7c, NR```/5```, NR````/2````, NRs/Xs/as, y, z, ps; archaeopyle intercalary, 1a + 2a + 3a, operculum tritabular; opercular pieces connected to the precingulars, general opercular formula 1aa + 2aa + 3aa.
Affinities:
Below, 1987, p. 112: The three opercular plates 1a, 2a and 3a in Phallocysta and Hebecysta are secate (free). Hebecysta preferably looses 2a.
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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.
Andreedinium Below, 1987a, has the tabulation cop, pop, cap, 5`, 3a, 7", 7c, 5"', 2"'', as, z, y, ps. The cyst may be proximate, proximochorate, chorate, spheroidal, ellipsoidal, ovaloidal, ovoidal, fusiform, peridinioidal, with rounded or acuminate poles or with apical horn and 1-2 antapical protuberances or horns, acavate-cavate. This genus has a type 3I archeopyle with adnate opercula, the paraplates being attached posteriorly. According to Below (1987) the operculum is solvate
[Andreedinium, Below, 1987a, p. 112
Type species: Andreedinium arcticum, Below, 1987a (pl.22, figs.1–3,6,8)]
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Original description: [Below, 1987]: (Translation: Fensome et al., 1991)
Diagnosis:
Vesicle/paraplate arrangement of the dinoflagellate amphiesma cop, pop, cap, 5`, 3a, 7``, 7c, 5```, 2````, as, z, y, ps; 1```` and 2```` symmetrical on both sides of the dorso-ventral plain; Cyst appearance proximate to chorate, sphaeroidal, ellipsoidal, ovaloidal, ovoidal, fusiform, peridinoidal, rounded at the poles, pointed or with an apical horn and 1-2 antapical projections or antapical horns, acavate-cavate. Wallconsists of Pedium and also additional Luxuria; surface smooth or ornamented, tabulated or nontabulated. Paratabulation formula NR PR/cop, pop, cap, NR`/5`, NRa`3a, NR``/7``, NRc/Xc/7c, NR```/5```, NR````/2````, NRs/Xs/as, y, z, ps; archaeopyle intercalary, 1a + 2a + 3a, operculum tritabular; opercular pieces connected to the precingulars, general opercular formula 1aa + 2aa + 3aa.
Affinities:
Below, 1987, p. 112: The three opercular plates 1a, 2a and 3a in Phallocysta and Hebecysta are secate (free). Hebecysta preferably looses 2a.
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Notes:
G.L. Williams short notes on species, Mesozoic-Cenozoic dinocyst course, Urbino, Italy, May 17-22, 1999 - LPP VIEWER CD-ROM 99.5.
Andreedinium Below, 1987a, has the tabulation cop, pop, cap, 5`, 3a, 7", 7c, 5"', 2"'', as, z, y, ps. The cyst may be proximate, proximochorate, chorate, spheroidal, ellipsoidal, ovaloidal, ovoidal, fusiform, peridinioidal, with rounded or acuminate poles or with apical horn and 1-2 antapical protuberances or horns, acavate-cavate. This genus has a type 3I archeopyle with adnate opercula, the paraplates being attached posteriorly. According to Below (1987) the operculum is solvate