Surviving Cameroceras shell fragments suggest the creature could have been as large as nine metres long. Despite being almost blind, it was a fearsome predator, probably the largest in the ocean when it was alive, 470 million years ago.
Squalodon bariensis. An early member of the odontocetes, Squalodon was a basal member of the Platanistoidea branch of the toothed whales – represented today by the river dolphins, but originally widespread throughout marine habitats before the rise of the modern oceanic dolphins.
》Liopleurodon is a genus of large, carnivorous marine reptile belonging to the Pliosauroidea, a clade of short-necked plesiosaurs. Liopleurodon lived during the Callovian stage of the Middle Jurassic Period.
A beautiful reconstruction of Sidneyia inexpectans by the University of Waterloo's Earth Sciences Museum. Sidneyia is an extinct arthropod known from fossils found in the Cambrian-age Burgess Shale formation of British Columbia.