Examples: Bivalves
European Bittersweet (Glycymeris, discus shape, [2, p. 213])
[alpha=37, beta=90, phi=0, mu=1, Omega=1, A=10500, a=10000, b=10500, L=0]
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The bivalves are less diversed in their shape than gastropods. The shell of bivalves has two pieces
(valves). The bittersweet clams (glycymeris) are found worldwide and have a circular or oval outline, prominent umbones,
and are ribbed or almost smooth. They burrow in sand or gravel offshore.
The european bittersweet is a solid, thick shell with an almost circular outline.
Habitat: mud and sand offshore, North Sea to Mediterranean.
[2] S. Peter Dance, Shells, Dorling Kindersley, 2002.
