Cameroceras would have been one of the apex predators of its time. It, along with other large nautiloids that lived with it, would have been more than double the size of the next largest animal living the the Ordovician. Cameroceras was an orthocone, or any cephalopod with a long straight shell. It could have regulated whether its shell was filled with air or water to change its elevation in the water. Because of its shell though, Cameroceras would not have been able to venture very deep into the ocean, because intense water pressure could have cracked its shell. Although large orthicones such as Cameroceras and its close relative Endoceras were the apex predators of the Ordovician, their reign ended with the Ordovician extinction brought
