Fig. 5 in The origin of the Pycnodonteinae and relationship between gryphaeas and true pycnodontes

Fig. 5. Variability of pycnodontein oyster Pycnogryphaea weberae (Yanin in Tschelzova, 1969) from Berriasian of Crimea, section Balki village, Dalmasiceras tauricum Subzone. A. Length vs. height, N = 27. B. Length/ height frequency, N = 27. C. Convexity/length frequency, N = 27. Conv, convexity of shell; Conv/L, convexity coefficient; H, shell height; L, shell length; L/H, elongation coefficient.