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From Land to Sea: The Early Evolution of Pinnipeds

During the second half of the Eocene, the Caniform Carnivorans began their first initial wave of diversification. One notable lineage that emerged by the end of the period were the Pan-Pinnipedians, being early relatives of modern seals, sea lions and walruses. The most basal of these were firmly terrestrial animals such as the tiny Parictis, a raccoon-like omnivore and capable climber once thought to have been the oldest known Ursid. More derived forms shifted to increasingly semi-aquatic niches, such as the superficially otter-like Semantorids. The famous Puijila was a member of this family and is often hailed as the 'missing link' in seal evolution; in reality this animal was not a direct ancestors of Pinnipeds but a close cousin. More firmly aquatic and sea dwelling forms appeared in the Late Oligocene, such as the small Enaliarctos. True Pinnipeds also diverged at this time but only became more common and diverse during the Miocene when the familiar modern seals, sea lions and walruses radiated widely. https://www.deviantart.com/drpolaris/   / drpolaris   All copyrighted images/footage/music is protected under Fair Use for reasons of criticism, commentary, social satire, and education. All copyrighted images belong to their respected owners. Please notify me if I neglected to credit your work in the video. All copyrighted footage and images in this video are protected under FAIR USE for reasons of Commentary, Education, Criticism, Parody, and Social Satire. Copyright Disclaimer under section 107 of the Copyright Act 1976, allowance is made for “fair use” for purposes such as criticism, comment, news reporting, teaching, scholarship, education and research. Fair use is a use permitted by copyright statute that might otherwise be infringing. Educational use tips the balance in favour of fair use. This means, copyrighted images can be displayed, even without the owner’s permission. If I neglected to give the copyright owners credit, please inform me and I will give you the appropriate credit. All video/game/image/music content is recorded and edited under fair use rights for reasons of commentary, education, and social satire.