Trigonioides

A picture published with the record for Trigonioides. What it shows has not been checked.

Smithsonian Institution · CC0 · via Smithsonian. 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
TrigonioididaePBDB
Diet
suspension feederPBDB, for Trigoniida
Life habit
infaunalPBDB, for Trigoniida
Motility
facultatively mobilePBDB, for Trigoniida
Vision
blindPBDB, for Bivalvia

Time the record covers

At least 25 million years on record.

The record covers at least 125.77 Mya to 100.5 Mya. No occurrence read is dated outside 143.1 Mya to 66 Mya.

Late Jurassic — about 0 of 29 occurrencesEarly Cretaceous — about 21 of 29 occurrencesEarly CretaceousLate Cretaceous — about 8 of 29 occurrencesLate CretaceousPaleocene — about 0 of 29 occurrences145–142 Mya — about 0.4 occurrences142–139 Mya — about 0.8 occurrences139–137 Mya — about 0.8 occurrences137–134 Mya — about 0.8 occurrences134–131 Mya — about 0.8 occurrences131–129 Mya — about 0.8 occurrences129–126 Mya — about 0.8 occurrences126–123 Mya — about 0.6 occurrences123–121 Mya — about 0.8 occurrences121–118 Mya — about 2 occurrences118–115 Mya — about 2 occurrences115–113 Mya — about 2 occurrences113–110 Mya — about 2 occurrences110–107 Mya — about 2 occurrences107–105 Mya — about 2 occurrences105–102 Mya — about 2 occurrences102–99 Mya — about 2 occurrences99–97 Mya — about 3 occurrences97–94 Mya — about 3 occurrences94–91 Mya — about 0.0 occurrences91–89 Mya — about 0.0 occurrences89–86 Mya — about 0.0 occurrences86–83 Mya — about 0.0 occurrences83–80 Mya — about 0.0 occurrences80–78 Mya — about 0.0 occurrences78–75 Mya — about 0.0 occurrences75–72 Mya — about 0.0 occurrences72–70 Mya — about 0.0 occurrences70–67 Mya — about 0.0 occurrences67–64 Mya — about 0.0 occurrences125.77 Mya100.5 Mya145 Mya64 Mya

29 occurrences of Trigonioides on record, most of them in the Early Cretaceous. 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

29 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

16 formations

Eboshi — 32.32°N, 130.35°EEboshi — 32.34°N, 130.36°EKarakizaki — 32.32°N, 130.33°EKinbu — 36.00°N, 128.00°EShinshu — 36.00°N, 128.00°EKitadani — 36.17°N, 136.50°EKitadani — 36.12°N, 136.54°EWakino — 33.75°N, 130.67°EWakino — 33.85°N, 130.80°EEnokuchi — 32.34°N, 130.33°EXinlong — 22.64°N, 107.91°ETaikyu — 36.00°N, 128.00°EShiohama — 34.27°N, 130.93°EHasandong — 35.19°N, 128.08°EDongmyeong — 35.75°N, 128.36°EElrhaz — 16.70°N, 9.33°EYongfu — 23.21°N, 110.53°EDuoni — 30.93°N, 94.71°ESharikhan — 40.30°N, 73.50°E

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The named rock units Trigonioides has been recovered from, largest first. Drawn where the rock is now, not where it formed. 3 occurrences have no formation on record, which is common for older literature.

Trigonioides and its relatives

Early Cretaceous

Where Trigonioides and its relatives were recorded in the Early Cretaceous.

Found in the same rock

83 taxa

The Paleobiology Database records 20 sites for Trigonioides, 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 29 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 Trigonioides

Source
Smithsonian
Credit
Smithsonian Institution
Licence
CC0 — this site’s default, not the record’s
Commercial use
the licence allows it

No 3D scan was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.

This is what the site found, which is not the same as what exists.

Keep going

What may have been alongside itTrigonioididae through timeFormations of the Early CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Kobayashi and Suzuki 1936