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Prunopyle frakesi Chen, 1975

Description - Add description

Cortical shell prune-shaped, thick-walled; pores small circular, tube-like, of uniform size, and evenly disposed. Medullary shell consisting of a spiral, dense, spongy disc at the center and a loose meshwork at the margin. Pylome small, circular, and surrounded by 7-12 conical spines of variable length.
Measurements based on 35 specimens from Samples 274-21-3, 54-64cm; 274-22,CC; and 274-23,CC: major axis of the shell, 270-342; minor axis of the shell, 198-297; ratio of the major to minor axes, 1.12-1.30.

Remarks:
This species differs from other species of this genus in having a spongy core and small tube-like pores.
Chen 1975


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