Siliqua

Siliqua is a genus of saltwater razor clams, marine bivalve molluscs in the family Pharidae, the razor clams and jackknife clams.

Siliqua

RazorClam23 · Public Domain · 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
PharidaePBDB
Diet
suspension feederPBDB, for Pharidae
Life habit
infaunalPBDB, for Pharidae
Motility
facultatively mobilePBDB, for Pharidae
Vision
blindPBDB, for Bivalvia

Time the record covers

At least 132 million years on record.

The record covers at least 132.6 Mya to 11.7 ka. No occurrence read is dated outside 139.1 Mya to 0 Mya.

Early Cretaceous — about 1 of 114 occurrencesEarly CretaceousLate Cretaceous — about 1 of 114 occurrencesLate CretaceousPaleocene — about 3 of 114 occurrencesEocene — about 5 of 114 occurrencesEoceneOligocene — about 11 of 114 occurrencesMiocene — about 32 of 114 occurrencesMiocenePliocene — about 22 of 114 occurrencesPleistocene — about 37 of 114 occurrences142–137 Mya — about 0.3 occurrences137–132 Mya — about 0.7 occurrences104–99 Mya — about 0.2 occurrences99–95 Mya — about 0.7 occurrences95–90 Mya — about 0.1 occurrences66–61 Mya — about 3 occurrences61–57 Mya — about 0.3 occurrences57–52 Mya — about 1 occurrence52–47 Mya — about 1 occurrence47–43 Mya — about 0.2 occurrences43–38 Mya — about 2 occurrences38–33 Mya — about 2 occurrences33–28 Mya — about 8 occurrences28–24 Mya — about 2 occurrences24–19 Mya — about 2 occurrences19–14 Mya — about 5 occurrences14–9.5 Mya — about 8 occurrences9.5–4.7 Mya — about 23 occurrences4.7–0 Mya — about 55 occurrences132.6 Mya11.7 ka142 Mya0 Mya

114 occurrences of Siliqua 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

114 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

38 formations

Sisquoc — 34.81°N, 120.22°WSisquoc — 34.90°N, 120.31°WCareaga Sandstone — 34.83°N, 120.38°WCareaga Sandstone — 34.74°N, 120.41°WCareaga Sandstone — 34.86°N, 120.46°WPalos Verdes Sand — 33.99°N, 118.45°WPalos Verdes Sand — 33.60°N, 117.88°WPalos Verdes Sand — 33.74°N, 118.28°WPalos Verdes Sand — 33.80°N, 118.17°WTachilni — 54.98°N, 162.85°WTachilni — 54.98°N, 162.68°WTachilni — 54.79°N, 163.36°WTachilni — 54.95°N, 163.05°WFalun de Pierrefitte — 48.50°N, 2.25°EFalun de Morigny — 48.45°N, 2.20°EJacalitos — 36.08°N, 120.48°WJacalitos — 36.09°N, 120.41°WJacalitos — 36.04°N, 120.39°WCercado — 19.46°N, 71.10°WCercado — 19.53°N, 71.27°WCercado — 19.42°N, 71.08°WLondon Clay — 50.89°N, 1.28°WTemblor — 35.95°N, 120.25°WSable de Vauroux-Saint-Antoine — 48.43°N, 2.15°ESable de Vauroux-Saint-Antoine — 48.50°N, 2.25°ELimimtevayamskaya — 58.97°N, 163.92°EPalembang — 2.92°S, 104.75°EFuranui — 42.52°N, 142.23°EAsahi — 43.23°N, 141.85°EPancho Rico — 35.90°N, 120.84°WPancho Rico — 35.97°N, 120.73°WPalos Verdes — 33.63°N, 117.90°WEtchegoin — 36.21°N, 120.67°WEtchegoin — 36.18°N, 120.64°WSan Pedro Sand — 33.71°N, 118.27°WColeraine — 47.00°N, 93.00°WConglomerat de Pierrefitte — 48.50°N, 2.25°EEnemtenskaya — 58.00°N, 158.00°EEtolonskaya — 58.42°N, 159.00°EKakertskaya — 62.50°N, 165.00°E

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The named rock units Siliqua has been recovered from, largest first. Drawn where the rock is now, not where it formed. 14 further formations hold fewer occurrences each and are not listed. 20 occurrences have no formation on record, which is common for older literature.

Siliqua and its relatives

Pleistocene

Where Siliqua and its relatives were recorded in the Pleistocene.

Found in the same rock

1,829 taxa

The Paleobiology Database records 80 sites for Siliqua, and this reads all of them. Of that, one read hit the database's own return limit, so every count below is a floor rather than a total. 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

42 references

Each of the 114 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. 30 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 Siliqua

Credit
RazorClam23
Licence
Public Domain
Commercial use
the licence allows it

No 3D scan of Siliqua 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 itPharidae through timeFormations of the PleistoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Mühlfeld 1811