Trigonia (Primatrigonia)

Searched as Modestella. The Paleobiology Database treats Trigonia (Primatrigonia) as the accepted name.

No picture of Trigonia (Primatrigonia) was found. Wikipedia, Wikidata and iDigBio were searched and had none. 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 Trigonia (Primatrigonia), or no answer at all. This entry cannot say which.

On record

Recorded, not inferred
Sits inside
TrigoniaPBDB
Diet
suspension feederPBDB, for Trigoniidae
Life habit
shallow infaunalPBDB, for Trigoniidae
Motility
fast-movingPBDB, for Trigoniidae
Vision
blindPBDB, for Trigoniidae
Environment
marinePBDB, for Trigoniidae

Time the record covers

At least 105 million years on record.

The record covers at least 205.7 Mya to 100.5 Mya. No occurrence read is dated outside 227.3 Mya to 93.9 Mya.

Late Triassic — about 15 of 24 occurrencesLate TriassicEarly Jurassic — about 0 of 24 occurrencesMiddle Jurassic — about 0 of 24 occurrencesLate Jurassic — about 0 of 24 occurrencesEarly Cretaceous — about 4 of 24 occurrencesEarly CretaceousLate Cretaceous — about 5 of 24 occurrences230–225 Mya — about 0.1 occurrences225–221 Mya — about 0.2 occurrences221–216 Mya — about 0.2 occurrences216–211 Mya — about 0.2 occurrences211–207 Mya — about 7 occurrences207–202 Mya — about 7 occurrences202–198 Mya — about 1 occurrence114–110 Mya — about 3 occurrences110–105 Mya — about 0.4 occurrences105–100 Mya — about 0.4 occurrences100–96 Mya — about 4 occurrences96–91 Mya — about 1 occurrence205.7 Mya100.5 Mya230 Mya91 Mya

24 occurrences of Trigonia (Primatrigonia) on record, most of them in the Late Triassic. 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

24 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

10 formations

Nayband — 32.50°N, 57.35°ENayband — 33.00°N, 57.00°ENayband — 32.35°N, 57.45°EFolkestone — 51.08°N, 1.18°EMunday’s Hill Phosphatic Sandstone — 51.92°N, 0.67°WBortepa — 37.50°N, 74.50°ESuoi Bang — 21.50°N, 104.00°ESanadinovo — 43.57°N, 24.96°EZlambach — 47.62°N, 13.73°EWest Melbury Marly Chalk — 50.90°N, 0.02°WLower Chalk — 51.08°N, 1.17°EChristopher — 76.13°N, 120.05°W

Loading coastlines…

The named rock units Trigonia (Primatrigonia) has been recovered from, largest first. Drawn where the rock is now, not where it formed. 2 occurrences have no formation on record, which is common for older literature.

Trigonia (Primatrigonia) and its relatives

Late Triassic

Where Trigonia (Primatrigonia) and its relatives were recorded in the Late Triassic.

Found in the same rock

161 taxa

The Paleobiology Database records 15 sites for Trigonia (Primatrigonia), 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

8 references

Each of the 24 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 content0

No picture of Trigonia (Primatrigonia) was found. Wikipedia, Wikidata and iDigBio were searched and had none.

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 Trigonia (Primatrigonia), or no answer at all. This entry cannot say which.

No 3D scan of Trigonia (Primatrigonia) 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 itTrigonia through timeFormations of the Late TriassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Hautmann 2001