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See text. Representative genera include Sinuites, Euphemetites, Warthia, Tetranota, Bucanopsis, Tremanotus, Bellerophon, Knightites, and many others. Unlike normal gastropods, the shells of Bellerophonts are characterised by a completely planispiral pattern of coiling, such as one finds in shelled cephalopods. Experts disagree whether Bellerophontids should be classified as torted gastropods or as untorted Tergomya, or whether the group Bellerophontida is perhaps an artificial construct, consisting of a number of distinct groups of Palaeozoic molluscs which evolved the same type of spiral shell independently. name="External_links" id="External_links">
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Bellerophontida Subcategories
Bellerophontida Articles
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