Odobenus rosmarus

The walrus is a large pinniped marine mammal with discontinuous distribution about the North Pole in the Arctic Ocean and subarctic seas of the Northern Hemisphere. It is the only extant species in the family Odobenidae and genus Odobenus. This species is subdivided into two subspecies: the Atlantic walrus, which lives in the Atlantic Ocean, and the Pacific walrus, which lives in the Pacific Ocean.

Odobenus rosmarus

Nixette · CC BY-SA 4.0 · 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
OdobenusPBDB
Diet
insectivorePBDB, for Odobenidae
Life habit
amphibiousPBDB, for Pinnipedia
Motility
actively mobilePBDB, for Osteichthyes
Environment
marinePBDB, for Pinnipedia

Time the record covers

At least 1.7 million years on record.

The record covers at least 1.8 Mya to 11.7 ka. No occurrence read is dated outside 2.58 Mya to 0 Mya.

Pliocene — about 0 of 156 occurrencesPleistocene — about 76 of 156 occurrencesPleistoceneHolocene — about 80 of 156 occurrences2.7–2.6 Mya — about 0.2 occurrences2.6–2.5 Mya — about 2 occurrences2.5–2.4 Mya — about 2 occurrences2.4–2.3 Mya — about 2 occurrences2.3–2.2 Mya — about 2 occurrences2.2–2.1 Mya — about 2 occurrences2.1–2.0 Mya — about 2 occurrences2.0–1.8 Mya — about 2 occurrences1.8–1.7 Mya — about 1 occurrence1.7–1.6 Mya — about 1 occurrence1.6–1.5 Mya — about 1 occurrence1.5–1.4 Mya — about 1 occurrence1.4–1.3 Mya — about 1 occurrence1.3–1.2 Mya — about 1 occurrence1.2–1.1 Mya — about 1 occurrence1.1–1.0 Mya — about 1 occurrence1.0–924 ka Mya — about 1 occurrence924 ka–821 ka Mya — about 1 occurrence821 ka–719 ka Mya — about 1 occurrence719 ka–616 ka Mya — about 1 occurrence616 ka–513 ka Mya — about 1 occurrence513 ka–411 ka Mya — about 1 occurrence411 ka–308 ka Mya — about 1 occurrence308 ka–205 ka Mya — about 1 occurrence205 ka–103 ka Mya — about 11 occurrences103 ka–0 Mya — about 114 occurrences1.8 Mya11.7 ka3.08 Mya0 Mya

156 occurrences of Odobenus rosmarus on record. 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

156 occurrences

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

11 formations

Ijmuiden Ground — 52.67°N, 2.83°EIjmuiden Ground — 53.17°N, 3.33°EIjmuiden Ground — 52.44°N, 3.05°EAcredale — 36.79°N, 76.17°WSouth Bight II — 51.54°N, 178.98°ESilver Bluff — 32.56°N, 80.29°WKempsville — 36.79°N, 76.17°WShimonopporo — 42.81°N, 141.54°EWando — 32.82°N, 79.91°WGubik — 70.85°N, 158.81°WPamlico — 36.06°N, 75.71°WDashwood Drift — 49.35°N, 124.45°WKoopnap — 51.49°N, 56.98°W

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The named rock units Odobenus rosmarus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 141 occurrences have no formation on record, which is common for older literature.

Found in the same rock

363 taxa

The Paleobiology Database records 153 sites for Odobenus rosmarus, and this reads all 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

76 references

Each of the 156 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. 64 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 content3

Picture of Odobenus rosmarus

Credit
Nixette
Licence
CC BY-SA 4.0
Commercial use
the licence allows it

Structured light scan

Licence
In Copyright
Commercial use
cannot be read from the licence given — check the record
Specimen
Odobenus rosmarus · nmv:mammalogy:c25810

3D model

Source
Sketchfab
Licence
CC Attribution
Commercial use
cannot be read from the licence given — check the record

The description on this site

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 itOdobenus through timeThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Linnaeus 1758)