Seashells: the plainness and beauty of their mathematical description

Examples: Cephalopods

Ammonite fossils (Cretaceous period, [9, p. 38])

[alpha=83, beta=90, phi=1, mu=1, Omega=1, A=2.5, a=1, b=0.9, L=0]

(Click with the mouse over the picture to rotate it)

These deeply ridged pinwheels were members of a once abundant, diverse, and geographically widespread group of cephalopod molluscs that become extinct along with dinosaurs 65 million years ago. Today they can only be found in fossils.

[9] Shells, Visual Encyclopedia, Editorial Verbo, 1997.

Last update: 11 May 21:10:44 2007

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