| Description | Pontolis is a large extinct species of walrus. It contained only the single species Pontolis magnus.
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| Source Data | |
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| Rank | genus |
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| Taxonomy (GBIF) | Life : Animalia : Chordata : Mammalia : Carnivora : Odobenidae : Pontolis |
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| Taxonomy (PBDB) | Life : Animalia : Chordata : Mammalia : Carnivora : Odobenidae : Pontolis |
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| Taxonomic Status (GBIF) | accepted |
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Classification
(PBDB,GBIF) | |
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| Scientific Name | Pontolis True, 1905 |
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| Name Published In | Proc. Biol. Soc. Washington 1 |
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| Opinions (PBDB) | | Name | Rank | Opinion | Evidence | Author |
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| Pontolis | genus | belongs to Otariidae | stated without evidence | Kellogg, 1922 | | Pontolis | genus | nomen dubium Dusignathinae | stated with evidence | Repenning and Tedford, 1977 | | Pontolis | genus | belongs to Imagotariinae | stated without evidence | Barnes, 1988 | | Pontolis | genus | belongs to Odobaenidae | implied | Carroll, 1988 | | Pontolis | genus | belongs to Imagotariinae | stated without evidence | Barnes, 1989 | | Pontolis | genus | belongs to Dusignathinae | stated with evidence | Deméré, 1994 | | Pontolis | genus | belongs to Imagotariinae | stated without evidence | Kohno et al., 1995 | | Pontolis | genus | belongs to Dusignathina | implied | McKenna and Bell, 1997 | | Pontolis | genus | belongs to Carnivora | second hand | Sepkoski, 2002 | | Pontolis | genus | belongs to Dusignathinae | stated without evidence | Berta, 2002 | | Pontolis | genus | belongs to Dusignathinae | stated with evidence | Deméré et al., 2003 | | Pontolis | genus | belongs to Odobaenidae | stated without evidence | Kohno, 2006 | | Pontolis | genus | belongs to Imagotariinae | stated without evidence | Barnes, 2008 | | Pontolis | genus | belongs to Dusignathinae | stated with evidence | Berta, 2009 | | Pontolis | genus | belongs to Odobenidae | stated without evidence | Boessenecker and Churchill, 2013 | | Pontolis | genus | belongs to Odobenidae | stated with evidence | Berta, 2018 | | Pontolis | genus | belongs to Odobenidae | stated without evidence | Berta et al., 2018 |
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| Status (PBDB) | extinct |
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| Taxon Size (PBDB) | 2 |
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| First Recorded Appearance | 11.6 - 7.2 Ma
Miocene |
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| Last Recorded Appearance | 11.6 - 2.6 Ma
Cenozoic |
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| Environment | marine (based on Pinnipedia) |
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| Motility | actively mobile (based on Osteichthyes) |
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| Diet | insectivore (based on Odobenidae) |
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| Reproduction | viviparous (based on Pinnipedimorpha) |
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| Ontogeny | modification of parts (based on Pinnipedimorpha) |
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| Taphonomy | hydroxylapatite (based on Pinnipedimorpha) |
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| Primary Reference (PBDB) | F. W. True. 1905. New name for Pontoleon. Proceedings of the Biological Society of Washington 17:253-253 |
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| Wikipedia | https://en.wikipedia.org/wiki/Pontolis |
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| True F. W. (1905) New name for Pontoleon, Proceedings of the Biological Society of Washington 17, 253-253 |
| True F. W (1905) Diagnosis of a new genus and species of fossil sea-lion from the Miocene of Oregon, Smithsonian Miscellaneous Collections 48 1, 47-49 |
| Kellogg R. (1922) Pinnipeds from Miocene and Pleistocene deposits of California, University of California Publications in Geological Sciences 13 4, 23-132 |
| Hay O. P. (1930) Second Bibliography and Catalogue of the Fossil Vertebrata of North America, Carnegie Institution of Washington 390 II, 1-1074 |
| Mitchell E. D. (1968) The Mio-Pliocene pinniped Imagotaria, Journal of the Fisheries Research Board of Canada 25 9, 1843-1900 |
| Barnes L. G. (1988) A new fossil pinniped (Mammalia: Otariidae) from the middle Miocene Sharktooth Hill Bonebed, California, Contributions in Science 396, 1-11 |
| Carroll R. L. (1988) , Vertebrate Paleontology and Evolution, 1-698 |
| Barnes L. G. (1989) A new enaliarctine pinniped from the Astoria Formation, Oregon, and a classification of the Otariidae (Mammalia: Carnivora), Contributions in Science 403, 1-26 |
| Horikawa H. (1995) A primitive odobenine walrus of Early Pliocene age from Japan, The Island Arc 3, 309-328 |
| Kohno N., Barnes L. G., et al (1995) Miocene fossil pinnipeds of the genera Prototaria and Neotherium (Carnivora; Otariidae; Imagotariinae) in the North Pacific Ocean: Evolution, relationships and distribution, The Island Arc 3, 285-308 |
| McKenna M. C., Bell S. K. (1997) , Classification of Mammals Above the Species Level, 1-640 |
| Sepkoski, Jr. J. J. (2002) A compendium of fossil marine animal genera, Bulletins of American Paleontology 363, 1-560 |
| Deméré T. A., Berta A., et al (2003) Pinnipedimorph evolutionary biogeography, Bulletin of the American Museum of Natural History 279, 32-76 |
| Kohno N. (2006) A new Miocene odobenid (Mammalia: Carnivora) from Hokkaido, Japan, and its implications for odobenid phylogeny, Journal of Vertebrate Paleontology 26 2, 411-421 |
| Barnes L. G. (2008) Otarioidea, Evolution of Tertiary Mammals of North America 2, 523-541 |
| Berta A. (2009) Pinniped Evolution, Encyclopedia of Marine Mammal Evolution, 861-868 |
| Boessenecker R. W., Churchill M. (2013) A Reevaluation of the Morphology, Paleoecology, and Phylogenetic Relationships of the Enigmatic Walrus Pelagiarctos, PLoS One 8 1, e5411 |
| Berta A. (2017) , The Rise of Marine Mammals: 50 Million Years of Evolution, 1-198 |
| Berta A. (2018) Pinniped evolution, Encyclopedia of Marine Mammals, 712-722 |
| Berta A., Churchill M., et al (2018) The Origin and Evolutionary Biology of Pinnipeds: Seals, Sea Lions, and Walruses, Annual Review of Earth and Planetary Sciences 46, 203-228 doi:10.1146/annurev-earth-082517-010009 |
| Magallanes I., Parham J. F., et al (2018) A new tuskless walrus from the Miocene of Orange County, California, with comments on the diversity and taxonomy of odobenids, PeerJ 6, e5708 doi:10.7717/peerj.5708 |
| GBIF/Paleo Database - via The Interim Register of Marine and Nonmarine Genera |
| Nomenclator Zoologicus. A list of the names of genera and subgenera in zoology from the tenth edition of Linnaeus, 1758 to the end of 2004. Digitised by uBio from vols. 1-9 of Neave (ed.), 1939-1996 plus supplementary digital-only volume. http://ubio.org/NomenclatorZoologicus (as at 2006). - via The Interim Register of Marine and Nonmarine Genera |
| Sepkoski, J. J., Jr. (2002). A compendium of fossil marine animal genera. Bulletins of American Paleontology. 363, 1-560. - via The Interim Register of Marine and Nonmarine Genera |
| Proc. Biol. Soc. Washington 1 - via The Interim Register of Marine and Nonmarine Genera |
Pontolis âśť
