Apical cycle | distal cycle of fasciculith. (Alternative term cone, see appendix). |
Central body | optically distinct body occurring in the centre of fasciculith. {Romein 1979} |
Column cycle | proximal cycle of fasciculith, usually forms most of the fasciculith. |
Fenestra | regular depression on fasciculith. |
Longitudinal ridge | ridge parallel to length of fasciculith. |
Proximal surface | lower surface of fasciculith. |