Otariinae
Sea lions are pinnipeds characterized by external ear flaps, long foreflippers, the ability to walk on all fours, short and thick hair, and a big chest and belly. Together with the fur seals, they make up the family Otariidae, eared seals. The sea lions have six extant and one extinct species in five genera. Their range extends from the subarctic to tropical waters of the global ocean in both the Northern and Southern hemispheres, with the notable exception of the northern Atlantic Ocean.

Atsme · 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- Sits inside
- OtariidaePBDB
- Diet
- piscivorePBDB, for Otariidae
- Life habit
- amphibiousPBDB, for Pinnipedia
- Motility
- actively mobilePBDB, for Osteichthyes
- Environment
- marinePBDB, for Pinnipedia
Time the record covers
At least 4.6 million years on record.
The record covers at least 7.246 Mya to 2.58 Mya. No occurrence read is dated outside 11.63 Mya to 774 ka.
5 occurrences of Otariinae on record, most of them in the Pliocene. The Paleobiology Database records this as a living group, and the chart stops with its fossils rather than at the present. 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
5 occurrences- Miocene37%
- Pliocene43%
- Pleistocene20%
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
3 formations
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The named rock units Otariinae has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Otariinae and its relatives
PlioceneWhere Otariinae and its relatives were recorded in the Pliocene.
Found in the same rock
57 taxa- Carcharodon carcharias3 sites
- Hydrodamalis cuestae3 sites
- Balaenopteridae2 sites
- Cepphus2 sites
- Equini2 sites
- Isurus oxyrinchus2 sites
- Myliobatoidea2 sites
- Nannocetus2 sites
- Odobeninae2 sites
- Odontoceti indet.2 sites
- Oncorhynchus rastrosus2 sites
- Semicossyphus2 sites
- Accipitridae1 site
- Aethia1 site
- Aethia barnesi1 site
- Aves1 site
- Balaenopterinae1 site
- Camelidae1 site
- Camelinae1 site
- Carcharhinus1 site
- Carcharodon hastalis1 site
- Cepphus olsoni1 site
- Chimaeridae1 site
- Dasyatidae1 site
The Paleobiology Database records 5 sites for Otariinae, 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
4 references- The vertebrate fossils of the marine Cenozoic San Mateo Formation at Oceanside, California2
- The sequence of fossil marine mammal assemblages in Mexico1
- Marine mammal teeth (Otariidae and Delphinidae) from the early Pleistocene Setana Formation, Hokkaido, Japan1
- Sirenian evolution in the North Pacific Ocean1
Each of the 5 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. Each entry links to the Paleobiology Database's own record for the work.
Media and terms
Media content1
Picture of Otariinae
- Source
- Wikipedia/Commons
- Credit
- Atsme
- Licence
- CC BY-SA 4.0
- Commercial use
- the licence allows it
No 3D scan of Otariinae was found in Sketchfab.
Smithsonian Open Access and MorphoSource were 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, “Sea lion”
- 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 itOtariidae through timeFormations of the PlioceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Gray 1825