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Wetzeliella waipawaensis
From Fensome et al., 2019:
Wetzeliella waipawensis Wilson, 1967
Now Petalodinium. Originally Wetzeliella subgenus Rhombodinium, subsequently Rhombodinium, thirdly Dracodinium, fourthly (and now) Petalodinium.
Holotype: Wilson, 1967, fig.18
Locus typicus: Waipawa, Hawkes Bay, New Zealand
Stratum typicum: Early Eocene (Waipawan)
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Original description: Wilson, 1967, p.493: Wetzeliella (Rhombodinium) waipawensis
Periphragm more or less rhomboidal. with the lateral horns longer than polar horns. Margin generally smooth, sometimes serrated near polar horns. No indication of transverse girdle apart from distal notches in lateral horns. Left antapical horn, when developed, very small. Capsule circular. Periphragm surface punctate. Archeopyle four-sided.
Holotype: 1= 102 µm, h= 118µm, capsule 69 µ X 69 µm, ap. h. 14 µm, r. ant. h. 11 µm. Iat. h. 22 µm. Paratype (SM 204): l= 107 µm b= 118 µm, capsule 74 µm X 74 µm, ap. h. 11 µm, ant. h. 5 µm, r. ant. h. 14 µm, lat. h. 22 µm.
Affinities:
Wilson, 1967, p.493: Wetzeliella (Rhombodinium) waipawensis
This species has some similarity to W. (Rh.) glabra but differs in having substantially longer lateral horns, in lacking a transverse girdle, and in usually possessing widely space serrations near the horns.
Several species of the sub-genus Wetzeliellcl (Rhombodinium) have many features in common and it is not always easy to distinguish readily between them. Features such as periphragm shape and texture are of paramount importance.
Wetzeliella waipawensis Wilson, 1967
Now Petalodinium. Originally Wetzeliella subgenus Rhombodinium, subsequently Rhombodinium, thirdly Dracodinium, fourthly (and now) Petalodinium.
Holotype: Wilson, 1967, fig.18
Locus typicus: Waipawa, Hawkes Bay, New Zealand
Stratum typicum: Early Eocene (Waipawan)
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Original description: Wilson, 1967, p.493: Wetzeliella (Rhombodinium) waipawensis
Periphragm more or less rhomboidal. with the lateral horns longer than polar horns. Margin generally smooth, sometimes serrated near polar horns. No indication of transverse girdle apart from distal notches in lateral horns. Left antapical horn, when developed, very small. Capsule circular. Periphragm surface punctate. Archeopyle four-sided.
Holotype: 1= 102 µm, h= 118µm, capsule 69 µ X 69 µm, ap. h. 14 µm, r. ant. h. 11 µm. Iat. h. 22 µm. Paratype (SM 204): l= 107 µm b= 118 µm, capsule 74 µm X 74 µm, ap. h. 11 µm, ant. h. 5 µm, r. ant. h. 14 µm, lat. h. 22 µm.
Affinities:
Wilson, 1967, p.493: Wetzeliella (Rhombodinium) waipawensis
This species has some similarity to W. (Rh.) glabra but differs in having substantially longer lateral horns, in lacking a transverse girdle, and in usually possessing widely space serrations near the horns.
Several species of the sub-genus Wetzeliellcl (Rhombodinium) have many features in common and it is not always easy to distinguish readily between them. Features such as periphragm shape and texture are of paramount importance.