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Prolixosphaeridium conulum
Prolixosphaeridium conulum Davey, 1969
Holotype:Davey 1969, pl.8, fig.5
Locus typicus: Escalles, France
Stratum typicum: Cenomanian
Original diagnosis: Davey, 1969, p. 160
Shell elongate ovoidal; shell wall densely granular and bearing moderate number of processes. Processes acuminate to subconical, smooth walled, typically rigid, pointed distally. Processes tend to be aligned in circular manner around shell. Archaeopyle apical.
Dimensions: shell length 38 (43.8) 50 µm, width 20 (25.9) 29 µm, maximum length of processes 11 (15.1) 18 µm.
Original description: Davey, 1969, p. 160-161
The length of the shell is slightly less than twice the width. The surface granules are relatively large (c. 0.2 0.4 µm in width and height); they are equidistant from one another. The processes (45-60 in number) have broad bases (up to 6 µm) and taper distally to terminate in a point. They are approximately half the shell width in length, hollow and typically rigid, only occasionally being bent near the distal end. In the central region of the shell the processes are aligned, the rows encircling the shell. However, in one longitudinal portion in this region the processes are generally smaller and haphazard in arrangement. This region probably corresponds to the sulcus.
Holotype:Davey 1969, pl.8, fig.5
Locus typicus: Escalles, France
Stratum typicum: Cenomanian
Original diagnosis: Davey, 1969, p. 160
Shell elongate ovoidal; shell wall densely granular and bearing moderate number of processes. Processes acuminate to subconical, smooth walled, typically rigid, pointed distally. Processes tend to be aligned in circular manner around shell. Archaeopyle apical.
Dimensions: shell length 38 (43.8) 50 µm, width 20 (25.9) 29 µm, maximum length of processes 11 (15.1) 18 µm.
Original description: Davey, 1969, p. 160-161
The length of the shell is slightly less than twice the width. The surface granules are relatively large (c. 0.2 0.4 µm in width and height); they are equidistant from one another. The processes (45-60 in number) have broad bases (up to 6 µm) and taper distally to terminate in a point. They are approximately half the shell width in length, hollow and typically rigid, only occasionally being bent near the distal end. In the central region of the shell the processes are aligned, the rows encircling the shell. However, in one longitudinal portion in this region the processes are generally smaller and haphazard in arrangement. This region probably corresponds to the sulcus.