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About: Kayoceras     Goto   Sponge   NotDistinct   Permalink

An Entity of Type : dbo:Mollusca, within Data Space : dbpedia.org associated with source document(s)

Type: mollusca New Facet based on Instances of this Class

Kayoceras is a genus of middle Silurian nautiloid cephalopods, known from Iowa and Illinois, belonging to the Discosoridae. Related genera include Discosorus, , and . Kayoceras has a short, breviconic shell, like Discosorus, but with a more central siphuncle. Derivation is probably from Discosorus, through an evolutionary shifting of the siphuncle position, which has its origin in the Lowoceratidae, possibly through .