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Chatangiella tubifera
From Fensome et al., 2019:
Chatangiella? tubifera (Cookson and Eisenack, 1982, p.31–32, pl.3, figs.12–14) Lentin and Williams, 1985, p.54. Holotype: Cookson and Eisenack, 1982, pl.3, fig.12. Originally Deflandrea, subsequently (and now) Chatangiella?.
Questionable assignment: Lentin and Williams (1985, p.54); and Lebedeva (2000, p.113,121). Age: Barremian–
early Aptian.
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Original description: [Cookson and Eisenack, 1982] (translated from German):
Deflandrea tubifera n. sp.
Plate 3, Fig. 12-14
Type: The specimen shown on Plate 3, Fig. 12, and preserved in specimen Meadow Station Bore No. 9.
Diagnosis: A species of the genus Deflandrea, flat in shape, longer than wide, with a roughly triangular epitract and a trapezoidal hypotract. The lateral edges of the epitract are often convex. The epitract terminates in a short, distinct tube (Fig. 14). The hypotract has a broad, but pointed antapic horn; the other is often indicated as a broad, short cusp. The belt (cingulum), which separates the epitract and hypotract at its widest point, is quite broad but only slightly depressed, formed by low folds of the periphragm. A longitudinal furrow (sulcus) is not developed. The archaeopyle is almost circular and rounded and quite large. The endophragm is oval, longer than wide; it usually touches the periphragm laterally. The endophragm and periphragm are thin, delicate, and unpaneled. The periphragm bears sparsely spaced granules. Only very rarely are these arranged in rows, as in the paratypoid at the top right in the apical region, suggesting concealed paneling.
Material and dimensions: Numerous specimens in the same preparation. Type: Length: Width 107:67 μ, paratypoid 114:70 μ. Other specimens are approximately between 80:50 μ and 117:73 μ (8 measured).
Occurrence: Meadow Station Bore.
Chatangiella? tubifera (Cookson and Eisenack, 1982, p.31–32, pl.3, figs.12–14) Lentin and Williams, 1985, p.54. Holotype: Cookson and Eisenack, 1982, pl.3, fig.12. Originally Deflandrea, subsequently (and now) Chatangiella?.
Questionable assignment: Lentin and Williams (1985, p.54); and Lebedeva (2000, p.113,121). Age: Barremian–
early Aptian.
---------------------------------------------------------------------------------------------------
Original description: [Cookson and Eisenack, 1982] (translated from German):
Deflandrea tubifera n. sp.
Plate 3, Fig. 12-14
Type: The specimen shown on Plate 3, Fig. 12, and preserved in specimen Meadow Station Bore No. 9.
Diagnosis: A species of the genus Deflandrea, flat in shape, longer than wide, with a roughly triangular epitract and a trapezoidal hypotract. The lateral edges of the epitract are often convex. The epitract terminates in a short, distinct tube (Fig. 14). The hypotract has a broad, but pointed antapic horn; the other is often indicated as a broad, short cusp. The belt (cingulum), which separates the epitract and hypotract at its widest point, is quite broad but only slightly depressed, formed by low folds of the periphragm. A longitudinal furrow (sulcus) is not developed. The archaeopyle is almost circular and rounded and quite large. The endophragm is oval, longer than wide; it usually touches the periphragm laterally. The endophragm and periphragm are thin, delicate, and unpaneled. The periphragm bears sparsely spaced granules. Only very rarely are these arranged in rows, as in the paratypoid at the top right in the apical region, suggesting concealed paneling.
Material and dimensions: Numerous specimens in the same preparation. Type: Length: Width 107:67 μ, paratypoid 114:70 μ. Other specimens are approximately between 80:50 μ and 117:73 μ (8 measured).
Occurrence: Meadow Station Bore.