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Cyclonephelium indicum*
Cyclonephelium indicum Mehrotra and Sarjeant, 1987
Name illegitimate. Jr. homonym of Cyclonephelium indicum Khanna and Singh, 1981.
Now Circulodinium. Originally Cyclonephelium (name illegitimate), subsequently (and now) Circulodinium.
Holotype: Mehrota and Sarjeant, 1987, pl.2, fig.2
Locus typicus: Narasapur well-1, Godavari-Krishna basin, Andhra-Pradesh, India
Stratum typicum: Palaeocene
Original diagnosis: Mehrota and Sarjeant, 1987, p.163
Cyst proximochorate, skolochorate and cryptotabulate. Central body lenticular. Antapical pole asymmetrically placed, with sometimes a slight concavity alongside. Autophragm thin and laevigate, covered with numerous (usually exceeding 100) short, slender and hollow processes, open distally; the distal extremities are usually entire, sometimes expanded and with a serrate margin and are unlinked. Processes are much fewer and shorter on the mid-dorsal and midventral areas than at the margins. Archaeopyle apical (type tA), archaeopyle margin zigzag; an offset notch is the only indication of the sulcus. Dimensions: Holotype: length of cyst (apex lacking) 55 Ám, breadth 65 Ám, length of processes 6-10 Ám. Range: length of cyst (apex lacking) 38-57 Ám, breadth 46-67 Ám, process length 5-10 Ám (average 8-9 Ám). Ten specimens measured.
Name illegitimate. Jr. homonym of Cyclonephelium indicum Khanna and Singh, 1981.
Now Circulodinium. Originally Cyclonephelium (name illegitimate), subsequently (and now) Circulodinium.
Holotype: Mehrota and Sarjeant, 1987, pl.2, fig.2
Locus typicus: Narasapur well-1, Godavari-Krishna basin, Andhra-Pradesh, India
Stratum typicum: Palaeocene
Original diagnosis: Mehrota and Sarjeant, 1987, p.163
Cyst proximochorate, skolochorate and cryptotabulate. Central body lenticular. Antapical pole asymmetrically placed, with sometimes a slight concavity alongside. Autophragm thin and laevigate, covered with numerous (usually exceeding 100) short, slender and hollow processes, open distally; the distal extremities are usually entire, sometimes expanded and with a serrate margin and are unlinked. Processes are much fewer and shorter on the mid-dorsal and midventral areas than at the margins. Archaeopyle apical (type tA), archaeopyle margin zigzag; an offset notch is the only indication of the sulcus. Dimensions: Holotype: length of cyst (apex lacking) 55 Ám, breadth 65 Ám, length of processes 6-10 Ám. Range: length of cyst (apex lacking) 38-57 Ám, breadth 46-67 Ám, process length 5-10 Ám (average 8-9 Ám). Ten specimens measured.