Kant, R.  Variabilität von Ammonoideen aus dem Karbon und Analyse der geometrischen
Wachstumsparameter. (Variability of Carbonfierous Ammonoids and analysis of the
geometric growth parameters). Manuscript 2006, 1-19, 9 text-fig.

Abstract: The morphology of the conch of Carboniferous Ammonoids is analysed
based on 13 parameters and their variability, which characterize the absolute, relative,
and allometric growth of  the conch.  The variability of one particular parameter can be
compared directly to that of other parameters using a specially further developed method.  
The results of the research on the relative variability and the analysis of the correlation
of parameters provide information about to what extent the growth of the conch follows
genetic programs.  Furthermore, the results of the research verify, which of the parameters
show a low, medium or high relative variability.