Odobenidae
Odobenidae is a family of pinnipeds, of which the only extant species is the walrus. In the past, the group was much more diverse, and includes more than a dozen fossil genera.

Ansgar Walk · CC BY-SA 3.0 · via Wikipedia/Commons. May be a photograph of a specimen, or an artist’s reconstruction — an interpretation of a skeleton, since colour and soft tissue are almost never preserved.
On record
Recorded, not inferred- Also called
- walrusPBDB
- Sits inside
- PinnipediaPBDB
- Diet
- insectivorePBDB
- Life habit
- amphibiousPBDB, for Pinnipedia
- Motility
- actively mobilePBDB, for Osteichthyes
- Environment
- marinePBDB, for Pinnipedia
Time the record covers
At least 15 million years on record.
The record covers at least 15.98 Mya to 11.7 ka. No occurrence read is dated outside 23.04 Mya to 0 Mya.
406 occurrences of Odobenidae on record, most of them in the Pleistocene. The Paleobiology Database records this as a living group. Bar height is expected occurrences, not a count: each fossil is spread across the span it is dated to, so a tall narrow bar means tight dating and a low wide one means loose.
When
406 occurrences- Miocene28%
- Pliocene18%
- Pleistocene33%
- Holocene20%
These are dates about fossils, not the animal: the record can only begin after it arose and end before it died out, so either end may reach further. Shares are expected occurrences: a fossil dated to a span is counted partly in each period it straddles. More on what this infers.
Found in
78 formations
- Monterey Formation28
- Santa Margarita Formation17
- Yorktown Formation · Chesapeake Group16
- Purisima Formation15
- Capistrano Formation7
- Tamiami Formation7
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The named rock units Odobenidae has been recovered from, largest first. Drawn where the rock is now, not where it formed. 54 further formations hold fewer occurrences each and are not listed. 200 occurrences have no formation on record, which is common for older literature.
Odobenidae and its relatives
PleistoceneWhere Odobenidae and its relatives were recorded in the Pleistocene.
Found in the same rock
1,466 taxa- Odobenus rosmarus84 sites
- Ontocetus emmonsi54 sites
- Mysticeti19 sites
- Odobenus19 sites
- Odobenus obesus antiquus19 sites
- Imagotaria downsi16 sites
- Phocidae13 sites
- Balaenopteridae12 sites
- Carcharodon hastalis12 sites
- Cetacea10 sites
- Ursus maritimus10 sites
- Otodus megalodon9 sites
- Pusa hispida9 sites
- Rangifer tarandus9 sites
- Aves8 sites
- Carcharhinus8 sites
- Ontocetus8 sites
- Odontoceti7 sites
- Physeteridae7 sites
- Testudines7 sites
- Balaenidae6 sites
- Cetotheriidae6 sites
- Delphinapterus leucas6 sites
- Dusignathus santacruzensis6 sites
The Paleobiology Database records 365 sites for Odobenidae, and this reads 240 of them. The number is how many of those sites it was catalogued from too. The 24 sharing the most are listed.
This is not a list of everything alive at the time. It is only what has come out of the same ground as this animal and been written down.
Entered from
159 references- Pliocene walruses from the Yorktown Formation of Virginia and North Carolina, and a systematic revision of the North Atlantic Pliocene walruses38
- Otarioid seals of the Neogene23
- Notas sobre el genero Odobenus (Mammalia, Pinnipedia). 1. Una nueva suespecie fosil del Pleistoceno superior-Holoceno20
- Middle and late Miocene marine mammal assemblages from the Monterey Formation of Orange County, California19
- Polar bear fossil and archaeological records from the Pleistocene and Holocene in relation to sea ice extent and open water polynyas16
- New records of postglacial walrus and a review of Quaternary marine mammals in New Brunswick13
- First evidence of walrus (Odobenus rosmarus L) in Late Pleistocene Champlain Sea sediments, Quebec10
- De fossiele en recente walrussen van Nederland8
- Insights on the dental evolution of walruses based on new fossil specimens from California7
- A postglacial walrus (Odobenus rosmarus) from Bathhurst Island, Northwest Territories7
- Sirenian evolution in the North Pacific Ocean6
- Tusked walruses (Carnivora: Odobenidae) from the Miocene–Pliocene Purisima Formation of Santa Cruz, California (U.S.A.): a new species of the toothless walrus Valenictus and the oldest records of Odobeninae and Odobenini5
Each of the 406 occurrences read was entered from one of these publications, ordered by how many each accounts for. This is not a search for papers mentioning the name. 147 further references are not listed. Entries link to doi.org where the Paleobiology Database holds an identifier, and to its own record where it does not. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.
Media and terms
Media content1
Picture of Odobenidae
- Source
- Wikipedia/Commons
- Credit
- Ansgar Walk
- Licence
- CC BY-SA 3.0
- Commercial use
- the licence allows it
No 3D scan of Odobenidae was found in MorphoSource and Sketchfab.
Smithsonian Open Access was not reached for this taxon, so this list is what the others held rather than everything there is.
The description on this site
- Source
- Wikipedia, “Odobenidae”
- Licence
- CC BY-SA 4.0
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itPinnipedia through timeFormations of the PleistoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Allen 1880