p. 23
Facsimile
Transcription
Status: Complete
Certhium unilineatum, Conrad-Am. Jour. Sc. vol. 41 p. 345 pl 2 fig. 4.
Slightly turrited; volutions with each a spiral impressed line above the middle; space between this line and the suture with oblique plica.
H. 2.5
-D. 0.65
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