details
The Mathematical Study of Mollusk Shells
Details of mathematical models The notation is from page 5.
Nautilus. v=.18, c=1, a=1, b=0.6, h=1, k=0,t=20..1  Astroceras. v=.12, c=1, a=1.25, b=1.25, h=3.5, k=0,t=40..1
 Euhoplites. v=.1626, c=1, a=0.6, b=0.4, h=0.9, k=0,t=40..1  Bellerophina. v=.06, c=1, a=0.85, b=1.2, h=0.75, k=0,t=10..1 

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