Synthliboramphus antiquus

The ancient murrelet is a bird in the auk family. The English term "murrelet" is a diminutive of "murre", a word of uncertain origins, but which may imitate the call of the common guillemot. Ancient murrelets are called "ancient" because they have grey on the back like a shawl, as worn by the elderly.

Synthliboramphus antiquus

Eric Ellingson · CC BY 2.0 · 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
Ancient murreletPBDB
Sits inside
SynthliboramphusPBDB
Diet
carnivorePBDB, for Coelurosauria
Life habit
ground dwelling, solitaryPBDB, for Theropoda
Motility
actively mobilePBDB, for Theropoda
Environment
marinePBDB, for Charadriiformes
Mass
206 gWikidata

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 22 occurrencesPleistocene — about 19 of 22 occurrencesPleistoceneHolocene — about 3 of 22 occurrences2.7–2.6 Mya — about 0.0 occurrences2.6–2.5 Mya — about 0.2 occurrences2.5–2.4 Mya — about 0.2 occurrences2.4–2.3 Mya — about 0.2 occurrences2.3–2.2 Mya — about 0.2 occurrences2.2–2.1 Mya — about 0.2 occurrences2.1–2.0 Mya — about 0.2 occurrences2.0–1.8 Mya — about 0.2 occurrences1.8–1.7 Mya — about 0.2 occurrences1.7–1.6 Mya — about 0.2 occurrences1.6–1.5 Mya — about 0.2 occurrences1.5–1.4 Mya — about 0.2 occurrences1.4–1.3 Mya — about 0.2 occurrences1.3–1.2 Mya — about 0.2 occurrences1.2–1.1 Mya — about 0.2 occurrences1.1–1.0 Mya — about 0.2 occurrences1.0–924 ka Mya — about 0.2 occurrences924 ka–821 ka Mya — about 0.2 occurrences821 ka–719 ka Mya — about 0.3 occurrences719 ka–616 ka Mya — about 0.5 occurrences616 ka–513 ka Mya — about 0.5 occurrences513 ka–411 ka Mya — about 0.5 occurrences411 ka–308 ka Mya — about 0.5 occurrences308 ka–205 ka Mya — about 0.5 occurrences205 ka–103 ka Mya — about 3 occurrences103 ka–0 Mya — about 13 occurrences129 ka – 11.7 ka3.08 Mya0 Mya

22 occurrences of Synthliboramphus antiquus 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

22 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

1 formation

San Pedro — 33.75°N, 118.28°W

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The named rock units Synthliboramphus antiquus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 21 occurrences have no formation on record, which is common for older literature.

Synthliboramphus antiquus and its relatives

Pleistocene

Where Synthliboramphus antiquus and its relatives were recorded in the Pleistocene.

Found in the same rock

324 taxa

The Paleobiology Database records 22 sites for Synthliboramphus antiquus, 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

9 references

Each of the 22 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 content1

Picture of Synthliboramphus antiquus

Credit
Eric Ellingson
Licence
CC BY 2.0
Commercial use
the licence allows it

No 3D scan of Synthliboramphus antiquus was found in Smithsonian Open Access and Sketchfab.

MorphoSource was 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 itSynthliboramphus through timeFormations of the PleistoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Gmelin 1789)