Belemnitida, an extinct order of cephalopods commonly known as "belemnites"
In turn, belemnites appear to have formed part of the diet of marine reptiles such as Ichthyosaurs, whose fossilized stomachs frequently contain phosphatic hooks from the arms of cephalopods.
The most important prey of the brown lanternshark are bony fishes (mainly lanternfishes), followed by cephalopods (mainly the squid Watasenia scintillans), and finally crustaceans (mainly prawns such as Acanthephyra).
The main prey species reported for Fiordland penguins are cephalopods (85%, mainly Arrow squid, Nototodarus sloanii), followed by crustaceans (13%, primarily Krill, Nyctiphanes australis) and fish (2%, mainly Red Cod and Hoki).
Intejocerida is the name given to a group of generally straight shelled nautiloid cephalopods originally found in Lower and Middle Ordovician sediments in the Angara River basin in Russia; defined in the Treatise as an order, and combined there with the Endocerida in the Endoceratoidea.
Trained as a medical anatomist, Hoyle is most famous for his monographic studies on cephalopods from major exploring expeditions of his era including the Challenger, the Albatross, the British National Antarctic Expedition and the Scottish National Antarctic Expedition.