Trapezidae

Searched as Trapeziidae. The Paleobiology Database treats Trapezidae as the accepted name.

No picture of Trapezidae was found. iDigBio was searched and had none. Wikipedia and Wikidata have a picture filed under this name, but nothing tied it to Trapezidae itself, so it was not used. Smithsonian Open Access did not answer, so this is what the others held rather than everything there is. GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Trapezidae, or no answer at all. This entry cannot say which.

On record

Recorded, not inferred
Sits inside
ArcticoideaPBDB
Diet
suspension feederPBDB, for Venerida
Life habit
infaunalPBDB, for Venerida
Motility
facultatively mobilePBDB, for Venerida
Vision
blindPBDB, for Bivalvia

Time the record covers

At least 264 million years on record.

The record covers at least 264.28 Mya to 11.7 ka. No occurrence read is dated outside 266.9 Mya to 0 Mya.

Permian — about 1 of 142 occurrencesEarly Triassic — about 0 of 142 occurrencesMiddle Triassic — about 3 of 142 occurrencesLate Triassic — about 2 of 142 occurrencesLate TriassicEarly Jurassic — about 6 of 142 occurrencesEarly JurassicMiddle Jurassic — about 0 of 142 occurrencesLate Jurassic — about 0 of 142 occurrencesEarly Cretaceous — about 7 of 142 occurrencesEarly CretaceousLate Cretaceous — about 6 of 142 occurrencesLate CretaceousPaleocene — about 7 of 142 occurrencesEocene — about 32 of 142 occurrencesOligocene — about 3 of 142 occurrencesMiocene — about 47 of 142 occurrencesPliocene — about 6 of 142 occurrencesPleistocene — about 20 of 142 occurrences272–263 Mya — about 1 occurrence254–245 Mya — about 1 occurrence245–236 Mya — about 2 occurrences236–227 Mya — about 0.0 occurrences227–218 Mya — about 0.4 occurrences218–209 Mya — about 0.4 occurrences209–200 Mya — about 6 occurrences200–191 Mya — about 0.7 occurrences191–181 Mya — about 0.3 occurrences181–172 Mya — about 0.3 occurrences145–136 Mya — about 2 occurrences136–127 Mya — about 0.8 occurrences127–118 Mya — about 1 occurrence118–109 Mya — about 1 occurrence109–100 Mya — about 1 occurrence91–82 Mya — about 0.2 occurrences82–73 Mya — about 0.8 occurrences73–64 Mya — about 6 occurrences64–54 Mya — about 8 occurrences54–45 Mya — about 12 occurrences45–36 Mya — about 16 occurrences36–27 Mya — about 3 occurrences27–18 Mya — about 11 occurrences18–9.1 Mya — about 35 occurrences9.1–0 Mya — about 31 occurrences264.28 Mya11.7 ka272 Mya0 Mya

142 occurrences of Trapezidae on record, most of them in the Miocene. 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

142 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

55 formations

Kunugidaira — 36.83°N, 145.75°EKunugidaira — 37.00°N, 140.75°ETainohata — 34.75°N, 135.17°EMatilija — 34.48°N, 119.30°Wopoka — 51.32°N, 21.95°EWaimanalo — 21.35°N, 158.12°WWaimanalo — 21.45°N, 157.72°WCarbonera — 24.22°N, 102.82°WWeglin — 50.72°N, 21.95°EFels — 48.50°N, 15.76°EFels — 48.51°N, 15.74°EAldabra Limestone — 9.42°S, 46.45°ECoralline Crag — 52.03°N, 1.38°ECoralline Crag — 52.75°N, 1.53°EGosport Sand — 31.54°N, 87.52°WAquia — 38.58°N, 77.12°WMegami — 34.70°N, 128.18°EMint Spring — 32.27°N, 89.99°WEwekoro — 6.92°N, 3.19°ESelsey — 50.73°N, 0.78°WVejle Fjord — 55.18°N, 11.88°Emarly chalk — 51.22°N, 21.43°EPolonez Cove — 62.25°S, 59.00°WSuoi Bang — 21.50°N, 104.00°EKhuiala — 27.86°N, 72.93°EKamchikskaya — 62.50°N, 165.00°ELychow — 50.69°N, 22.03°EWeglinek — 50.72°N, 21.95°E

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The named rock units Trapezidae has been recovered from, largest first. Drawn where the rock is now, not where it formed. 31 further formations hold fewer occurrences each and are not listed. 61 occurrences have no formation on record, which is common for older literature.

Trapezidae and its relatives

Miocene

Where Trapezidae and its relatives were recorded in the Miocene.

Found in the same rock

2,909 taxa

The Paleobiology Database records 86 sites for Trapezidae, 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

78 references

Each of the 142 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. 66 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 content0

No picture of Trapezidae was found. iDigBio was searched and had none.

Wikipedia and Wikidata have a picture filed under this name, but nothing tied it to Trapezidae itself, so it was not used.

Smithsonian Open Access did not answer, so this is what the others held rather than everything there is.

GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Trapezidae, or no answer at all. This entry cannot say which.

No 3D scan of Trapezidae 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.

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

Keep going

What may have been alongside itArcticoidea through timeFormations of the MioceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Lamy 1920