Smileoceras
Encyclopedia
Smileoceras is an extinct prehistoric nautiloid genus named by Zhurableva, 1972, included in the Discosorida
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Discosorida
Discosorida is a unique order of cephalopods that lived from the beginning of the Middle Ordovician, through the Silurian, and into the Devonian. Discosorids are unique in the structure and formation of the siphuncle, the tube that runs through and connects the chambers in cephalopods, which unlike...
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