Author: Jan Delsing
Text ID: 5197
Text Type: 7
Page: 0
Created: 2010-04-20 13:51:41 - User Jiří Novák
Language: EN
In Gastropoda: In a plane through the axis, that angle subtended between two straight lines that touch adjacent whorls on opposite sides near the apex; identical
with the spire angle if whorls increase at a regular rate