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Hystrichosphaeridium isocalamum
Hystrichosphaeridium isocalamus Deflandre and Cookson, 1955
Now Tanyosphaeridium. Originally Hystrichosphaeridium, subsequently (and now) Tanyosphaeridium.
Holotype: Deflandre and Cookson, 1955, pl.2, fig.7-8
Locus typicus: Onepah Station, New South Wales, Australia
tratum typicum: Early Cretaceous
Original diagnosis: Deflandre and Cookson, 1955, p.272
Shell elongate-elliptical, covered by a large number of tubular processes with cleanly truncate apices, tubes of equal length, and elliptical cross section, possibly communicating with the interior. Surface of shell punctulate.
Dimensions: Holotypus (incomplete): overall length 67 µm, breadth 38 µm, shell 42 µm long and 18 µm broad, tubes 10-11 µm long.
Now Tanyosphaeridium. Originally Hystrichosphaeridium, subsequently (and now) Tanyosphaeridium.
Holotype: Deflandre and Cookson, 1955, pl.2, fig.7-8
Locus typicus: Onepah Station, New South Wales, Australia
tratum typicum: Early Cretaceous
Original diagnosis: Deflandre and Cookson, 1955, p.272
Shell elongate-elliptical, covered by a large number of tubular processes with cleanly truncate apices, tubes of equal length, and elliptical cross section, possibly communicating with the interior. Surface of shell punctulate.
Dimensions: Holotypus (incomplete): overall length 67 µm, breadth 38 µm, shell 42 µm long and 18 µm broad, tubes 10-11 µm long.