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Wetzeliella echinosuturata
Wetzeliella echinosuturata Wilson, 1967
Originally Wetzeliella, subsequently Wilsonidium, thirdly (and now) Vallodinium?
Holotype: Wilson, 1967, figs. 22-24
Locus typicus: Waipawa, Hawkes Bay, New Zealand
Stratum typicum: Middle Eocene (Porangan)
Original description: Wilson, 1967, p.477, 479: Wetzeliella (Wetzeliella) echinosuturata
Periphragm surface punctate, outline pentagonal; sides more or less straight, rarely concave. Margin adorned with prominent capitate or oblate processes (3-10 µm). Right antapical horn invariably longer than left, although there is usually only a small difference. Ornament on periphragm comprised of very prominent ridges crested by oblate or capitate processes (1 up to 16 µm). The ridges correspond to sutures and define a clear peridinioid tabulation (Fig. 3). Pericoel large. Capsule finely granular, usually more or less circular, occasionally sub-rhomboidal. Archeopyle when formed is rectangular and replaces 2a plate.
Dimensions: Holotype: length 149 µm, height 143 µm, capsule 99x91 µm, apical horn 14 µm, left antapical horn 11 µm, right antapical horn 22 µm, lateral horns 16 µm.
Range (7 specimens): length 138(146)160 µm, height 124(136)151 µm, capsule (1) 94x98 µm, apical horn 9(13)16 µm, lenft antapical horn 8(11)15 µm, right antapical horn 14(21)27 µm. Iateral horns 11(16)19 µm.
Affinities:
Wilson, 1967, p.479: Wetzeliella (Wetzeliella) echinosuturata
This species is similar to W. (W.) tabulata in that the proesses are located along the sutures between adjacent plates. Only one specimen with an archeopyle was found.
Originally Wetzeliella, subsequently Wilsonidium, thirdly (and now) Vallodinium?
Holotype: Wilson, 1967, figs. 22-24
Locus typicus: Waipawa, Hawkes Bay, New Zealand
Stratum typicum: Middle Eocene (Porangan)
Original description: Wilson, 1967, p.477, 479: Wetzeliella (Wetzeliella) echinosuturata
Periphragm surface punctate, outline pentagonal; sides more or less straight, rarely concave. Margin adorned with prominent capitate or oblate processes (3-10 µm). Right antapical horn invariably longer than left, although there is usually only a small difference. Ornament on periphragm comprised of very prominent ridges crested by oblate or capitate processes (1 up to 16 µm). The ridges correspond to sutures and define a clear peridinioid tabulation (Fig. 3). Pericoel large. Capsule finely granular, usually more or less circular, occasionally sub-rhomboidal. Archeopyle when formed is rectangular and replaces 2a plate.
Dimensions: Holotype: length 149 µm, height 143 µm, capsule 99x91 µm, apical horn 14 µm, left antapical horn 11 µm, right antapical horn 22 µm, lateral horns 16 µm.
Range (7 specimens): length 138(146)160 µm, height 124(136)151 µm, capsule (1) 94x98 µm, apical horn 9(13)16 µm, lenft antapical horn 8(11)15 µm, right antapical horn 14(21)27 µm. Iateral horns 11(16)19 µm.
Affinities:
Wilson, 1967, p.479: Wetzeliella (Wetzeliella) echinosuturata
This species is similar to W. (W.) tabulata in that the proesses are located along the sutures between adjacent plates. Only one specimen with an archeopyle was found.