Trigonarca

Searched as Trigonarca curvatodonta oblonga. The Paleobiology Database treats Trigonarca as the accepted name.

Trigonarca

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
ArcullaeinaePBDB
Diet
suspension feederPBDB, for Glycymerididae
Life habit
semi-infaunalPBDB, for Glycymerididae
Motility
facultatively mobilePBDB, for Glycymerididae
Vision
blindPBDB, for Bivalvia
Environment
coastal,inner shelf,outer shelf,oceanicPBDB, for Glycymerididae

Time the record covers

At most 2.1 million years on record.

The one occurrence read is dated to somewhere between 85.7 Mya and 83.6 Mya, which is a dating window rather than a span.

Late Cretaceous — about 1 of 1 occurrenceLate Cretaceous86–86 Mya — about 0.0 occurrences86–86 Mya — about 0.0 occurrences86–85 Mya — about 0.0 occurrences85–85 Mya — about 0.0 occurrences85–85 Mya — about 0.0 occurrences85–85 Mya — about 0.0 occurrences85–85 Mya — about 0.0 occurrences85–85 Mya — about 0.0 occurrences85–85 Mya — about 0.0 occurrences85–85 Mya — about 0.0 occurrences85–85 Mya — about 0.0 occurrences85–85 Mya — about 0.0 occurrences85–84 Mya — about 0.0 occurrences84–84 Mya — about 0.0 occurrences84–84 Mya — about 0.0 occurrences84–84 Mya — about 0.0 occurrences84–84 Mya — about 0.0 occurrences84–84 Mya — about 0.0 occurrences84–84 Mya — about 0.0 occurrences84–84 Mya — about 0.0 occurrences84–84 Mya — about 0.0 occurrences84–84 Mya — about 0.0 occurrences86.2 Mya83.1 Mya

1 occurrence of Trigonarca on record, most of them in the Late 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

1 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.

Trigonarca and its relatives

Late Cretaceous

Where Trigonarca and its relatives were recorded in the Late Cretaceous.

Found in the same rock

1,234 taxa

The Paleobiology Database records 136 sites for Trigonarca, 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

1 reference

Each of the 1 occurrence 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. Each entry links to the Paleobiology Database's own record for the work.

Media and terms

Media content1

Picture of Trigonarca

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

No 3D scan of Trigonarca was found in MorphoSource and Sketchfab.

Smithsonian Open Access was 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 itArcullaeinae through timeFormations of the Late CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Conrad 1862)