Cameroceras

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Cameroceras was a genus of giant orthoconic cephalopod that lived during the Ordovician period.

The partial shell of one giant Cameroceras yielded a total length estimated at the time at nearly 30 feet. Regardless of this estimate's degree of accuracy, this gargantuan cephalopod was one of the largest animals ever to live during the Paleozoic Era, if not the largest.

Judging from its huge size, it was likely an apex predator that lived in deeper water, and probably fed on eurypterids such as Megalograptus, large trilobites, and smaller cephalopods.

The program "Chased by Sea Monsters" speculatively suggests that it was largely blind, having large, yet feeble eyes like those of what may be its closest living relative, Nautilus. "Cameroceras" has become a catch all term, or "wastebasket taxon," for any large orthoconic endocerid such as Endoceras, Vaginoceras, Meniscoceras, and even Cameroceras as a described genus