Iotrigonia

No picture of Iotrigonia 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 Iotrigonia, or no answer at all. This entry cannot say which.

On record

Recorded, not inferred
Sits inside
IotrigoniidaePBDB
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 89 million years on record.

The record covers at least 161.5 Mya to 72.2 Mya. No occurrence read is dated outside 165.3 Mya to 66 Mya.

Middle Jurassic — about 1 of 18 occurrencesLate Jurassic — about 0 of 18 occurrencesEarly Cretaceous — about 15 of 18 occurrencesEarly CretaceousLate Cretaceous — about 2 of 18 occurrencesLate CretaceousPaleocene — about 0 of 18 occurrences167–164 Mya — about 0.4 occurrences164–160 Mya — about 0.6 occurrences143–140 Mya — about 1 occurrence140–136 Mya — about 1 occurrence136–133 Mya — about 2 occurrences133–129 Mya — about 0.2 occurrences126–123 Mya — about 1 occurrence123–119 Mya — about 3 occurrences119–116 Mya — about 3 occurrences116–112 Mya — about 2 occurrences112–109 Mya — about 0.2 occurrences109–105 Mya — about 0.2 occurrences105–102 Mya — about 0.2 occurrences102–98 Mya — about 0.1 occurrences74–71 Mya — about 0.4 occurrences71–67 Mya — about 1 occurrence67–64 Mya — about 0.5 occurrences161.5 Mya72.2 Mya167 Mya64 Mya

18 occurrences of Iotrigonia 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

18 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

6 formations

Bhuj — 23.63°N, 68.95°EBhuj — 23.80°N, 68.85°ELo Valdés — 33.83°S, 70.08°WKoranga Sandstone — 38.41°S, 177.31°EStanwell Coal Measures — 23.48°S, 150.32°EDuvalia Marl — 22.98°S, 44.40°ELefipán — 42.68°S, 69.84°W

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The named rock units Iotrigonia has been recovered from, largest first. Drawn where the rock is now, not where it formed. 11 occurrences have no formation on record, which is common for older literature.

Iotrigonia and its relatives

Early Cretaceous

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

Found in the same rock

138 taxa

The Paleobiology Database records 16 sites for Iotrigonia, 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

12 references

Each of the 18 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 Iotrigonia 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 Iotrigonia, or no answer at all. This entry cannot say which.

No 3D scan of Iotrigonia 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 itIotrigoniidae through timeFormations of the Early CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Van Hoepen 1929)