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Wetzeliella (Wetzeliella) ornata
Wetzeliella (Wetzeliella) ornata Wilson, 1967
Holotype: Wilson, 1967, fig.33
Locus typicus: Waipawa, Hawkes Bay, New Zealand
Stratum typicum: Dannevirke Series mudstone. Mangaorapan Stage, Lower Eocene
Original description: Wilson, 1967, p.481, 492
Periphragm pentagonal, angular, with five well developed horns although left antapical horn substantially shorter than right. Ornament very distinctive, comprises short, rectangular pillars (1=1-3 Á) arranged in rows and usually capped by a fairly stout membranous fibre. The small rectangular perforations (I up to 3 Á) so formed are especially apparent along the periphragm margin. Archeopyle large, trapezium-shaped. Capsule large, circular. Tabulation not clear although process rows appear to correspond to sutures. Transverse girdle always present.
Dimensions: Holotype: l = 156 Ám h = 151 Ám, capsule 99 Ám X 102 Ám, apical horn 30 Ám, Ieft antapical horn 14 Ám, right antapical horn 25 Ám, side horns 25 Ám. Another specimen (SM 123): l = 124 Ám, b=135 Ám capsule 74 Ám X 88 Ám, ap. h. 25 Ám, l. ant. h. 8 Ám, r. ant. h. 22 Ám, lat. h. 22 Ám.
Affinities:
Wilson, 1967, p.492: This species is of the same general type as Wetzeliella (W.) clathrata Eis., W. (W.) coelothrypa Williams and Downie, and W. (W.) edwardsii Wilson since the processes are linked distally. It is readily distinguished by the very short length of the processes and the small rectangular nature of the perforations so formed.
Holotype: Wilson, 1967, fig.33
Locus typicus: Waipawa, Hawkes Bay, New Zealand
Stratum typicum: Dannevirke Series mudstone. Mangaorapan Stage, Lower Eocene
Original description: Wilson, 1967, p.481, 492
Periphragm pentagonal, angular, with five well developed horns although left antapical horn substantially shorter than right. Ornament very distinctive, comprises short, rectangular pillars (1=1-3 Á) arranged in rows and usually capped by a fairly stout membranous fibre. The small rectangular perforations (I up to 3 Á) so formed are especially apparent along the periphragm margin. Archeopyle large, trapezium-shaped. Capsule large, circular. Tabulation not clear although process rows appear to correspond to sutures. Transverse girdle always present.
Dimensions: Holotype: l = 156 Ám h = 151 Ám, capsule 99 Ám X 102 Ám, apical horn 30 Ám, Ieft antapical horn 14 Ám, right antapical horn 25 Ám, side horns 25 Ám. Another specimen (SM 123): l = 124 Ám, b=135 Ám capsule 74 Ám X 88 Ám, ap. h. 25 Ám, l. ant. h. 8 Ám, r. ant. h. 22 Ám, lat. h. 22 Ám.
Affinities:
Wilson, 1967, p.492: This species is of the same general type as Wetzeliella (W.) clathrata Eis., W. (W.) coelothrypa Williams and Downie, and W. (W.) edwardsii Wilson since the processes are linked distally. It is readily distinguished by the very short length of the processes and the small rectangular nature of the perforations so formed.