Zalophus californianus

The California sea lion is a coastal eared seal native to western North America. It is one of six species of sea lions. Its natural habitat ranges from southeast Alaska to central Mexico, including the Gulf of California. California sea lions are sexually dimorphic; males are larger than females, and have a thicker neck, and a protruding sagittal crest. They mainly haul out on sandy or rocky beaches, but they also frequent manmade environments such as marinas and wharves. California sea lions feed on a number of species of fish and squid, and are preyed on by orcas and great white sharks.

Zalophus californianus

(c) Jonathan Eisen, some rights reserved (CC BY) · CC BY 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
California sea lionPBDB
Sits inside
ZalophusPBDB
Diet
piscivorePBDB, for Otariidae
Life habit
amphibiousPBDB, for Pinnipedia
Motility
actively mobilePBDB, for Osteichthyes
Environment
marinePBDB, for Pinnipedia

Time the record covers

At least 117 thousand years on record.

The record covers at least 129 ka to 11.7 ka. No occurrence read is dated outside 2.58 Mya to 0 Mya.

Pliocene — about 0 of 13 occurrencesPleistocene — about 9 of 13 occurrencesPleistoceneHolocene — about 4 of 13 occurrences2.7–2.6 Mya — about 0.0 occurrences2.6–2.5 Mya — about 0.1 occurrences2.5–2.4 Mya — about 0.1 occurrences2.4–2.3 Mya — about 0.1 occurrences2.3–2.2 Mya — about 0.1 occurrences2.2–2.1 Mya — about 0.1 occurrences2.1–2.0 Mya — about 0.1 occurrences2.0–1.8 Mya — about 0.1 occurrences1.8–1.7 Mya — about 0.1 occurrences1.7–1.6 Mya — about 0.1 occurrences1.6–1.5 Mya — about 0.1 occurrences1.5–1.4 Mya — about 0.1 occurrences1.4–1.3 Mya — about 0.1 occurrences1.3–1.2 Mya — about 0.1 occurrences1.2–1.1 Mya — about 0.1 occurrences1.1–1.0 Mya — about 0.1 occurrences1.0–924 ka Mya — about 0.1 occurrences924 ka–821 ka Mya — about 0.1 occurrences821 ka–719 ka Mya — about 0.3 occurrences719 ka–616 ka Mya — about 0.6 occurrences616 ka–513 ka Mya — about 0.6 occurrences513 ka–411 ka Mya — about 0.6 occurrences411 ka–308 ka Mya — about 0.6 occurrences308 ka–205 ka Mya — about 0.6 occurrences205 ka–103 ka Mya — about 1 occurrence103 ka–0 Mya — about 7 occurrences129 ka – 11.7 ka3.08 Mya0 Mya

13 occurrences of Zalophus californianus 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

13 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

5 formations

San Pedro — 33.75°N, 118.28°WShibikawa — 41.09°N, 140.32°ENarita — 35.72°N, 140.22°EPort Orford — 42.83°N, 124.55°WPalos Verdes Sand — 33.66°N, 117.90°W

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The named rock units Zalophus californianus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 8 occurrences have no formation on record, which is common for older literature.

Zalophus californianus and its relatives

Pleistocene

Where Zalophus californianus and its relatives were recorded in the Pleistocene.

Found in the same rock

228 taxa

The Paleobiology Database records 13 sites for Zalophus californianus, 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

8 references

Each of the 13 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. 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 content2

Picture of Zalophus californianus

Credit
(c) Jonathan Eisen, some rights reserved (CC BY)
Licence
CC BY 4.0
Commercial use
the licence allows it

3D model

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

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

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 itZalophus through timeFormations of the PleistoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Lesson 1828)