Synthliboramphus

Synthliboramphus is a small genus of seabirds in the auk family from the North Pacific. The genus name Synthliboramphus is from Ancient Greek sunthlibo, "to compress", and rhamphos, "bill". The English name "Murrelet" is a diminutive of "murre", a word of uncertain origins, but which may imitate the call of the common guillemot.

Synthliboramphus

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
Sits inside
AlcinaePBDB
Diet
carnivorePBDB, for Coelurosauria
Life habit
ground dwelling, solitaryPBDB, for Theropoda
Motility
actively mobilePBDB, for Theropoda
Environment
marinePBDB, for Charadriiformes

Time the record covers

At least 5.3 million years on record.

The record covers at least 5.333 Mya to 11.7 ka. No occurrence read is dated outside 7.246 Mya to 0 Mya.

Miocene — about 1 of 41 occurrencesMiocenePliocene — about 5 of 41 occurrencesPliocenePleistocene — about 32 of 41 occurrencesPleistoceneHolocene — about 3 of 41 occurrences7.5–7.2 Mya — about 0.0 occurrences7.2–7.0 Mya — about 0.1 occurrences7.0–6.7 Mya — about 0.1 occurrences6.7–6.5 Mya — about 0.1 occurrences6.5–6.2 Mya — about 0.1 occurrences6.2–5.9 Mya — about 0.1 occurrences5.9–5.7 Mya — about 0.1 occurrences5.7–5.4 Mya — about 0.1 occurrences5.4–5.2 Mya — about 0.1 occurrences5.2–4.9 Mya — about 0.1 occurrences4.9–4.6 Mya — about 0.2 occurrences4.6–4.4 Mya — about 0.5 occurrences4.4–4.1 Mya — about 0.5 occurrences4.1–3.9 Mya — about 0.5 occurrences3.9–3.6 Mya — about 0.5 occurrences3.6–3.4 Mya — about 0.6 occurrences3.4–3.1 Mya — about 0.6 occurrences3.1–2.8 Mya — about 0.6 occurrences2.8–2.6 Mya — about 0.6 occurrences2.6–2.3 Mya — about 0.9 occurrences2.3–2.1 Mya — about 0.9 occurrences2.1–1.8 Mya — about 0.9 occurrences1.8–1.5 Mya — about 0.9 occurrences1.5–1.3 Mya — about 0.7 occurrences1.3–1.0 Mya — about 0.5 occurrences1.0–775 ka Mya — about 0.5 occurrences775 ka–516 ka Mya — about 1 occurrence516 ka–258 ka Mya — about 1 occurrence258 ka–0 Mya — about 27 occurrences5.333 Mya11.7 ka7.7 Mya0 Mya

41 occurrences of Synthliboramphus 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

41 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

3 formations

San Diego — 32.90°N, 117.10°WSan Diego — 32.68°N, 117.07°WSan Diego — 32.76°N, 117.13°WSan Diego — 32.64°N, 117.03°WSan Diego — 32.74°N, 117.17°WAlmejas — 28.11°N, 115.18°WSan Pedro — 33.75°N, 118.28°W

Loading coastlines…

The named rock units Synthliboramphus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 32 occurrences have no formation on record, which is common for older literature.

Synthliboramphus and its relatives

Pleistocene

Where Synthliboramphus and its relatives were recorded in the Pleistocene.

Found in the same rock

390 taxa

The Paleobiology Database records 32 sites for Synthliboramphus, 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

13 references

Each of the 41 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. 1 further reference is 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 content2

Picture of Synthliboramphus

Credit
Eric Ellingson
Licence
CC BY 2.0
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
Synthliboramphus craveri · LACM:Birds:87297

Smithsonian Open Access 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 itAlcinae through timeFormations of the PleistoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Brandt 1837