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Deflandrea manumii
Deflandrea manumi Cookson and Eisenack, 1970
Now Chatangiella madura. Originally Deflandrea manumii, subsequently (and now) Chatangiella madura. See also Chatangiella manumii (combination illegitimate).
Holotype: Cookson and Eisenack, 1970, pl.11, fig.10; Lentin and Vozzhennikova, 1990, pl.4, fig.3; text-fig.19
Locus typicus: Madura No. 1 Bore, Australia
Stratum typicum: Senonian
Original description: Cookson and Eisenack, 1970, p.141-142
Shell relatively large, considerably longer than broad, divided approximately equally by a clearly-defined discontinuous girdle. The epitheca, which is slightly longer than the hypotheca, consists of a prominent apical region with strongly convex shoulder-like sides, a short, broad, median apical horn with a straight apex and outwardly slanting sides, and a slightly broader lower portion with convex sides which extends to the girdle. The sides of the hypotheca narrow gradually inwards towards a squarish antapex with a slightly pointed prominence on the right-hand side.
The girdle is relatively wide, strongly defined and broken at regular intervals. The archeopyle is rather large and slightly angular in outline.
The wall of the shell is finely granular throughout. In addition, relatively large clearly-defined areas both above and below the individual subdivisions of the girdle, which resemble fields of Peridinium type (Manum 1963), are outlined by relatively prominent, closely arranged, bluntly-pointed solid thickenings which are circular in outline in surface view.
The walls of the central body and shell are thin and in close contact.
Dimensions: Holotype: c. 102 µm long, c. 60 µm broad. Range: 20 specimens c. 95-138 µm long, c. 52-80 µm broad.
Affinities:
Cookson and Eisenack, 1970, p.141: Both the shape and the size of the shell of D. manumi are closely similar to those of D. tripartita Cookson and Eisenack 1960, D. victoriensis Manum and Cookson 1964 and D. verrucosa Manum 1963, and show the Peridinium type of tabulation discussed by Manum in 1963. The fields outlined on the surface of the shell of D. manumi are 3", 4" and 5" and 2""", 3""" and 4""". Between the individual fields there are clearly marked longitudinal intercalary strips.
Now Chatangiella madura. Originally Deflandrea manumii, subsequently (and now) Chatangiella madura. See also Chatangiella manumii (combination illegitimate).
Holotype: Cookson and Eisenack, 1970, pl.11, fig.10; Lentin and Vozzhennikova, 1990, pl.4, fig.3; text-fig.19
Locus typicus: Madura No. 1 Bore, Australia
Stratum typicum: Senonian
Original description: Cookson and Eisenack, 1970, p.141-142
Shell relatively large, considerably longer than broad, divided approximately equally by a clearly-defined discontinuous girdle. The epitheca, which is slightly longer than the hypotheca, consists of a prominent apical region with strongly convex shoulder-like sides, a short, broad, median apical horn with a straight apex and outwardly slanting sides, and a slightly broader lower portion with convex sides which extends to the girdle. The sides of the hypotheca narrow gradually inwards towards a squarish antapex with a slightly pointed prominence on the right-hand side.
The girdle is relatively wide, strongly defined and broken at regular intervals. The archeopyle is rather large and slightly angular in outline.
The wall of the shell is finely granular throughout. In addition, relatively large clearly-defined areas both above and below the individual subdivisions of the girdle, which resemble fields of Peridinium type (Manum 1963), are outlined by relatively prominent, closely arranged, bluntly-pointed solid thickenings which are circular in outline in surface view.
The walls of the central body and shell are thin and in close contact.
Dimensions: Holotype: c. 102 µm long, c. 60 µm broad. Range: 20 specimens c. 95-138 µm long, c. 52-80 µm broad.
Affinities:
Cookson and Eisenack, 1970, p.141: Both the shape and the size of the shell of D. manumi are closely similar to those of D. tripartita Cookson and Eisenack 1960, D. victoriensis Manum and Cookson 1964 and D. verrucosa Manum 1963, and show the Peridinium type of tabulation discussed by Manum in 1963. The fields outlined on the surface of the shell of D. manumi are 3", 4" and 5" and 2""", 3""" and 4""". Between the individual fields there are clearly marked longitudinal intercalary strips.