Allodesmus

Allodesmus is an extinct genus of pinniped from the middle to late Miocene of California and Japan that belongs to the extinct pinniped family Desmatophocidae.

Allodesmus

Jonathan Chen · 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
AllodesminaePBDB
Diet
carnivorePBDB, for Pinnipedimorpha
Life habit
amphibiousPBDB, for Pinnipedia
Motility
actively mobilePBDB, for Osteichthyes
Environment
marinePBDB, for Pinnipedia

Time the record covers

At least 11 million years on record.

The record covers at least 23.04 Mya to 11.63 Mya. No occurrence read is dated outside 27.3 Mya to 5.333 Mya.

Oligocene — about 2 of 42 occurrencesOligoceneMiocene — about 40 of 42 occurrencesMiocenePliocene — about 0 of 42 occurrences28–27 Mya — about 0.1 occurrences27–26 Mya — about 0.4 occurrences26–26 Mya — about 0.4 occurrences26–25 Mya — about 0.4 occurrences25–24 Mya — about 0.4 occurrences24–23 Mya — about 0.4 occurrences23–22 Mya — about 0.1 occurrences16–16 Mya — about 4 occurrences16–15 Mya — about 7 occurrences15–14 Mya — about 7 occurrences14–13 Mya — about 6 occurrences13–12 Mya — about 5 occurrences12–12 Mya — about 5 occurrences12–11 Mya — about 2 occurrences11–10 Mya — about 1 occurrence10–9.4 Mya — about 1 occurrence9.4–8.7 Mya — about 1 occurrence8.7–7.9 Mya — about 1 occurrence7.9–7.1 Mya — about 0.9 occurrences7.1–6.4 Mya — about 0.1 occurrences6.4–5.6 Mya — about 0.1 occurrences5.6–4.8 Mya — about 0.0 occurrences23.04 Mya11.63 Mya27.8 Mya4.8 Mya

42 occurrences of Allodesmus on record, most of them in the Miocene. 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

42 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

19 formations

Aoki — 36.32°N, 137.95°EAoki — 36.32°N, 137.94°ETemblor — 35.30°N, 118.50°WTemblor — 35.46°N, 118.92°WBessho — 36.30°N, 137.97°EMonterey — 33.60°N, 117.70°WTsurushi — 38.03°N, 138.24°ETsurushi — 37.84°N, 138.26°EMontesano — 46.98°N, 121.93°WMontesano — 48.68°N, 122.27°WRound Mountain — 35.39°N, 118.99°WSanta Margarita — 37.05°N, 122.04°WVaqueros — 37.41°N, 122.19°WRosarito Beach — 32.12°N, 116.80°WTorgugas — 27.15°N, 114.30°WJewett — 35.67°N, 118.91°WHaraichi — 36.32°N, 138.88°E"Topanga" — 33.66°N, 117.63°WKanomata-zawa — 36.55°N, 139.88°EMito — 36.37°N, 140.47°EPysht — 48.19°N, 124.07°WOkoppezawa — 42.83°N, 143.77°EModelo — 34.13°N, 118.57°W

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The named rock units Allodesmus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 1 occurrence has no formation on record, which is common for older literature.

Allodesmus and its relatives

Miocene

Where Allodesmus and its relatives were recorded in the Miocene.

Found in the same rock

260 taxa

The Paleobiology Database records 34 sites for Allodesmus, 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

20 references

Each of the 42 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. 8 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 Allodesmus

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

No 3D scan of Allodesmus 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

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 itAllodesminae through timeFormations of the MioceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Kellogg 1922