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Deflandrea scabrata
Deflandrea scabrata Wilson, 1988, p. 18
Holotype: Wilson, 1988, pl.6, fig.2; Fensome et al., 1996, fig.3 — p.2339.
Locus typicus: Waipawa Section, Hawkes Bay, New Zealand
Age: early-middle Eocene; see Fensome et al. (1996, p.2340).
Original description: Wilson, 1988, p. 18
Pericyst fairly large, slightly elongate in dorso-ventral view with pointed apical horn and two relatively blunt antapical horns. Periphragm thin; surface adorned with scattered grana or spines which may be clustered or linear; margin often finely serrated. Endophragm thick (up to 6 Ám); characteristically scabrate to somewhat spongy especially near poles and around margin, central part relatively smooth and devoid of ornament. Intercalary archeopyle broad (width up to 50 Ám); operculum free and comprises two adherent opercula from periphragm and endophragm.
Paracingulum well defined by parallel rows of grana (width c.8 Ám) and by notch in lateral margin. Parasulcus prominent, narrow, largely confined to hypocyst.
Paratabulation indicated by archeopyle and occasionally by clusters or rows of grana.
Dimensions: Holotype: overall length 135 Ám, breadth 84 Ám, length of endocyst 84 Ám, breadth 76 Ám, apical horn 22 Ám, antapical horns 16 Ám, 19 Ám. Range: overall length 105 (119)135 Ám, breadth 73 (80) 86 Ám (n = 10).
Affinities:
Wilson, 1988, p. 18: The species has some resemblance to Deflandrea phosphoritica Eisenack but differs mainly in having a characteristically scabrate thickened endocyst, and also in having a periphragm adorned with clusters of grana or spinules, and a finely serrate margin. It differs from D. antarctica Wilson and D. flounderensis Stover in having a thicker, more heavily scabrate endophragm, and in having significantly more prominent antapical horns.
Holotype: Wilson, 1988, pl.6, fig.2; Fensome et al., 1996, fig.3 — p.2339.
Locus typicus: Waipawa Section, Hawkes Bay, New Zealand
Age: early-middle Eocene; see Fensome et al. (1996, p.2340).
Original description: Wilson, 1988, p. 18
Pericyst fairly large, slightly elongate in dorso-ventral view with pointed apical horn and two relatively blunt antapical horns. Periphragm thin; surface adorned with scattered grana or spines which may be clustered or linear; margin often finely serrated. Endophragm thick (up to 6 Ám); characteristically scabrate to somewhat spongy especially near poles and around margin, central part relatively smooth and devoid of ornament. Intercalary archeopyle broad (width up to 50 Ám); operculum free and comprises two adherent opercula from periphragm and endophragm.
Paracingulum well defined by parallel rows of grana (width c.8 Ám) and by notch in lateral margin. Parasulcus prominent, narrow, largely confined to hypocyst.
Paratabulation indicated by archeopyle and occasionally by clusters or rows of grana.
Dimensions: Holotype: overall length 135 Ám, breadth 84 Ám, length of endocyst 84 Ám, breadth 76 Ám, apical horn 22 Ám, antapical horns 16 Ám, 19 Ám. Range: overall length 105 (119)135 Ám, breadth 73 (80) 86 Ám (n = 10).
Affinities:
Wilson, 1988, p. 18: The species has some resemblance to Deflandrea phosphoritica Eisenack but differs mainly in having a characteristically scabrate thickened endocyst, and also in having a periphragm adorned with clusters of grana or spinules, and a finely serrate margin. It differs from D. antarctica Wilson and D. flounderensis Stover in having a thicker, more heavily scabrate endophragm, and in having significantly more prominent antapical horns.