Seashells: the plainness and beauty of their mathematical description

Examples: Bivalves

Lyonsia clam (boat shape, [2, p. 246])

[alpha=39, beta=50, phi=0, mu=1, Omega=1, A=9000, a=6500, b=17000, L=0]

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These fragile shells belong to mollusks living in mud or inside sponges and sea squirts. Very thin and translucent, the umbones of this shell are near the front end.
Habitat: sandy mud offshore, Alaska to Lower California.

[2] S. Peter Dance, Shells, Dorling Kindersley, 2002.

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