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Dapsilidinium pastielsii
Dapsilidinium pastielsii (Davey and Williams, 1966) Bujak et al., 1980
Originally Polysphaeridium, subsequently (and now) Dapsilidinium.
Taxonomic junior synoym: Polysphaeridium (now Dapsilidinium) pseudocolligerum according to Mertens et al. (2014, p.532) — however, Fensome et al., in press retained Dapsilidinium pseudocolligerum as a separate species.
Holotype: Davey and Williams, 1966b, pl.4, fig.10; Eisenack and Kjellström, 1972, p.923; Bujak et al., 1980, pl.6, figs.6,9; Fensome et al., 1995, fig.1 — p.1647; Fauconnier and Masure, 2004, pl.19, figs.17–19.
Locus typicus: London Clay, Kent, England
Stratum typicum: Early Eocene
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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.
Dapsilidinium pastielsii (Davey and Williams, 1966b) Bujak et al., 1980, has an ovoidal central body with smooth or granular surface. Apical archeopyle with zig zag margin. Processes numerous, all one type, simple open, tapering distally to a narrow neck before spreading slightly to an opening with entire or serrate margin. Processes sometimes united proximally. Slightly fibrous. The processes broaden proximally, often quite considerably and may measure up to 9 µm in width but the latter is very variable. Size: diameter of central body 31-43 µm, length of processes up to 19 µm.
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Original diagnosis: Davey and Williams, p. 93: Polysphaeridium pastielsii
Ovoidal central body with smooth or granular surface. Apical archaeopyle with zig-zag margin. Processes numerous, all of one type; simple open, tapering distally to narrow neck before spreading slightly to an opening with entire or serrate margin. Processes sometimes united proximally, slightly fibrous.
Dimensions: holotype: diameter of central body 37-43 Ám, length of processes 10-14 Ám. Range: diameter of central body 31-43 Ám, length of processes up to 19 Ám.
Original description: Davey and Williams, p. 93: Polysphaeridium pastielsii
The processes broaden proximally, often quite considerably, and may measure up to 9 Ám in width but the latter is very variable. An apical archaeopyle is present.
Originally Polysphaeridium, subsequently (and now) Dapsilidinium.
Taxonomic junior synoym: Polysphaeridium (now Dapsilidinium) pseudocolligerum according to Mertens et al. (2014, p.532) — however, Fensome et al., in press retained Dapsilidinium pseudocolligerum as a separate species.
Holotype: Davey and Williams, 1966b, pl.4, fig.10; Eisenack and Kjellström, 1972, p.923; Bujak et al., 1980, pl.6, figs.6,9; Fensome et al., 1995, fig.1 — p.1647; Fauconnier and Masure, 2004, pl.19, figs.17–19.
Locus typicus: London Clay, Kent, England
Stratum typicum: Early Eocene
--------------------------------------------------
G.L. Williams short notes on species, Mesozoic-Cenozoic dinocyst course, Urbino, Italy, May 17-22, 1999 - LPP VIEWER CD-ROM 99.5.
Dapsilidinium pastielsii (Davey and Williams, 1966b) Bujak et al., 1980, has an ovoidal central body with smooth or granular surface. Apical archeopyle with zig zag margin. Processes numerous, all one type, simple open, tapering distally to a narrow neck before spreading slightly to an opening with entire or serrate margin. Processes sometimes united proximally. Slightly fibrous. The processes broaden proximally, often quite considerably and may measure up to 9 µm in width but the latter is very variable. Size: diameter of central body 31-43 µm, length of processes up to 19 µm.
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Original diagnosis: Davey and Williams, p. 93: Polysphaeridium pastielsii
Ovoidal central body with smooth or granular surface. Apical archaeopyle with zig-zag margin. Processes numerous, all of one type; simple open, tapering distally to narrow neck before spreading slightly to an opening with entire or serrate margin. Processes sometimes united proximally, slightly fibrous.
Dimensions: holotype: diameter of central body 37-43 Ám, length of processes 10-14 Ám. Range: diameter of central body 31-43 Ám, length of processes up to 19 Ám.
Original description: Davey and Williams, p. 93: Polysphaeridium pastielsii
The processes broaden proximally, often quite considerably, and may measure up to 9 Ám in width but the latter is very variable. An apical archaeopyle is present.