Triloculina

Triloculina is a genus of foraminifera in the order Miliolida, included in the Quinqueloculininae. The test has three chambers, each a half coil in length. Early chambers, at least in the microspheric generation, in quinqueloculinan arrangement, later becoming triloculine with successive chambers added in planes 120 degrees apart. Only the final three chambers are visible externally. The aperture is terminal, at the end of the final chamber, with a bifid tooth in adult forms. As with the entire order, the test is composed of imperforate, porcelaneous calcite.

Triloculina

via iDigBio · CC0 · via iDigBio. 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
MiliolinellinaePBDB
Diet
omnivorePBDB, for Foraminifera
Life habit
semi-infaunalPBDB, for Foraminifera
Motility
stationaryPBDB, for Foraminifera

Time the record covers

At least 113 million years on record.

The record covers at least 113.2 Mya to 11.7 ka. No occurrence read is dated outside 119.57 Mya to 0 Mya.

Early Cretaceous — about 1 of 481 occurrencesEarly CretaceousLate Cretaceous — about 8 of 481 occurrencesLate CretaceousPaleocene — about 38 of 481 occurrencesEocene — about 35 of 481 occurrencesEoceneOligocene — about 63 of 481 occurrencesOligoceneMiocene — about 60 of 481 occurrencesMiocenePliocene — about 35 of 481 occurrencesPleistocene — about 225 of 481 occurrences122–118 Mya — about 0.3 occurrences118–114 Mya — about 0.6 occurrences114–110 Mya — about 0.1 occurrences102–98 Mya — about 0.9 occurrences98–94 Mya — about 1 occurrence94–89 Mya — about 0.9 occurrences89–85 Mya — about 0.2 occurrences85–81 Mya — about 1 occurrence81–77 Mya — about 0.8 occurrences77–73 Mya — about 0.8 occurrences73–69 Mya — about 1 occurrence69–65 Mya — about 1 occurrence65–61 Mya — about 3 occurrences61–57 Mya — about 26 occurrences57–53 Mya — about 17 occurrences53–49 Mya — about 12 occurrences49–45 Mya — about 4 occurrences45–41 Mya — about 3 occurrences41–37 Mya — about 4 occurrences37–33 Mya — about 10 occurrences33–28 Mya — about 21 occurrences28–24 Mya — about 26 occurrences24–20 Mya — about 18 occurrences20–16 Mya — about 19 occurrences16–12 Mya — about 13 occurrences12–8.1 Mya — about 9 occurrences8.1–4.1 Mya — about 21 occurrences4.1–0 Mya — about 265 occurrences113.2 Mya11.7 ka122 Mya0 Mya

481 occurrences of Triloculina 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

481 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

39 formations

Qom Formation — 33.51°N, 51.99°EQom Formation — 34.51°N, 50.95°ESylhet Formation — 25.26°N, 91.72°ESinjar — 35.10°N, 45.59°ESinjar — 37.18°N, 43.22°ESinjar — 35.35°N, 45.42°ESinjar — 35.50°N, 45.33°EGuitar Formation — 9.12°N, 92.80°ELower Coralline Limestone — 35.92°N, 14.42°EBolognano — 42.17°N, 14.04°EIhungia — 40.27°S, 176.30°ERhodes — 36.42°N, 28.20°EQom — 35.50°N, 48.42°EQom — 37.34°N, 44.94°EKoronia — 35.05°N, 33.15°ERosefield — 31.89°N, 92.00°WLindos Acropolis — 35.92°N, 27.83°EQuilon Limestone — 8.97°N, 76.63°EGatun — 9.28°N, 79.88°WTimms Point Silt — 33.71°N, 118.27°WPuch — 49.23°N, 19.32°EJandaira — 5.78°S, 37.36°WBarton Beds — 50.67°N, 1.08°WCaloosahatchee — 25.91°N, 81.36°WBermont — 26.89°N, 82.01°WRosignano Limestone — 43.53°N, 10.43°ELeitha — 47.81°N, 16.63°EHochmoos — 47.61°N, 13.48°EBredasdorp — 34.53°S, 20.03°E

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The named rock units Triloculina has been recovered from, largest first. Drawn where the rock is now, not where it formed. 15 further formations hold fewer occurrences each and are not listed. 306 occurrences have no formation on record, which is common for older literature.

Triloculina and its relatives

Pleistocene

Where Triloculina and its relatives were recorded in the Pleistocene.

Found in the same rock

1,558 taxa

The Paleobiology Database records 388 sites for Triloculina, and this reads 240 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

106 references

Each of the 481 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. 94 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 content2

Picture of Triloculina

Source
iDigBio
Credit
via iDigBio
Licence
CC0
Commercial use
the licence allows it

3D model

Source
Sketchfab
Licence
CC0 Public Domain
Commercial use
the licence allows it

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 itMiliolinellinae through timeFormations of the PleistoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. d'Orbigny 1826