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Batioladinium natator
From Fensome et al., 2019:
Batioladinium natator Duxbury, 2018, p.177–178, pl.8, figs.7–10,15. Holotype: Duxbury, 2018, pl.8, fig.7. NIA. Age: early
Valanginian.
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Plate 8, figures 7–10, 15
Batioladinium sp. A BJAERKE 1978, pl. 3, fig. 4.
Holotype: Plate 8, Figure 7.
Paratype: Plate 8, Figure 10.
Type Locality: Well 20/01-10Y at 7153.80 ft (conventional core
chip), lower Valanginian. Holotype: E.F. K47.4. Paratype: E.F.
P43.4
Derivation of Name: From the Latin natator, -is, swimmer – in reference to its fishtail-like antapical development.
Diagnosis: An elongate pareodinioid dinocyst with a fairly long, sharply-tapering apical horn and two short, pointed, solid antapical horns which are of equal length and which can be laterally fused to produce a characteristic fishtail appearance. The archeopyle is apical with the operculum sometimes only partially detached. A deep sulcal notch typical of the genus is invariably present. The surface ornament is scabrate to granular
and of varying height, but generally more pronounced on the hypocyst and on the opercular plates. Alignment of surface ornament often outlines the cingulum.
Dimensions: Holotype: Length – 111 μm. Width – 46 μm.
Overall: Complete specimens: 122 (114) 109 μm × 48 (46) 43 μm.
Specimens Measured: 3.
Operculum detached: 106 (88) 84 μm. Width – 53 (49) 46 μm.
Batioladinium natator Duxbury, 2018, p.177–178, pl.8, figs.7–10,15. Holotype: Duxbury, 2018, pl.8, fig.7. NIA. Age: early
Valanginian.
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Plate 8, figures 7–10, 15
Batioladinium sp. A BJAERKE 1978, pl. 3, fig. 4.
Holotype: Plate 8, Figure 7.
Paratype: Plate 8, Figure 10.
Type Locality: Well 20/01-10Y at 7153.80 ft (conventional core
chip), lower Valanginian. Holotype: E.F. K47.4. Paratype: E.F.
P43.4
Derivation of Name: From the Latin natator, -is, swimmer – in reference to its fishtail-like antapical development.
Diagnosis: An elongate pareodinioid dinocyst with a fairly long, sharply-tapering apical horn and two short, pointed, solid antapical horns which are of equal length and which can be laterally fused to produce a characteristic fishtail appearance. The archeopyle is apical with the operculum sometimes only partially detached. A deep sulcal notch typical of the genus is invariably present. The surface ornament is scabrate to granular
and of varying height, but generally more pronounced on the hypocyst and on the opercular plates. Alignment of surface ornament often outlines the cingulum.
Dimensions: Holotype: Length – 111 μm. Width – 46 μm.
Overall: Complete specimens: 122 (114) 109 μm × 48 (46) 43 μm.
Specimens Measured: 3.
Operculum detached: 106 (88) 84 μm. Width – 53 (49) 46 μm.