Back
Conosphaeridium tubulosum
Conosphaeridium tubulosum, Cookson and Eisenack, 1969
Holotype: Cookson and Eisenack, 1969, pl.2, fig.E
Occurrence: Balcatta Bore No. 1, 180-210 feet. B. F. Balme Sample 1480.
Age: Albian-Cenomanian
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Original description: [Cookson and Eisenack, 1969]:
Description:
Shell apparently circular in outline with relatively long, cylindrical to somewhat conical appendages with straight or slightly oblique openings, the edges of which are somewhat crenulate or serrate. The walls of the appendages are longitudinally striated, the thickenings frequently extending along the whole length of the wall. The wall of the shell is moderately thin, unpatterned and readily crushable.
Dimensions:
Holotype – diameter of shell about 70 μm, overall diameter about 130 μm, appendages about 28-30 μm long, 8-10 wide.
Range of appendages about 25-30 μm long.
Affinities:
C. tubulosum differs from C. striatoconus in both the shape and size of the appendages. In C. striatoconus they are relatively short and conical whereas in C. tubulosum they are relatively long, cylindrical or only slightly conical.
Holotype: Cookson and Eisenack, 1969, pl.2, fig.E
Occurrence: Balcatta Bore No. 1, 180-210 feet. B. F. Balme Sample 1480.
Age: Albian-Cenomanian
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Original description: [Cookson and Eisenack, 1969]:
Description:
Shell apparently circular in outline with relatively long, cylindrical to somewhat conical appendages with straight or slightly oblique openings, the edges of which are somewhat crenulate or serrate. The walls of the appendages are longitudinally striated, the thickenings frequently extending along the whole length of the wall. The wall of the shell is moderately thin, unpatterned and readily crushable.
Dimensions:
Holotype – diameter of shell about 70 μm, overall diameter about 130 μm, appendages about 28-30 μm long, 8-10 wide.
Range of appendages about 25-30 μm long.
Affinities:
C. tubulosum differs from C. striatoconus in both the shape and size of the appendages. In C. striatoconus they are relatively short and conical whereas in C. tubulosum they are relatively long, cylindrical or only slightly conical.