Trigonarca californica

Trigonarca californica

via iDigBio · CC BY · 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
TrigonarcaPBDB
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 8.2 million years on record.

Every occurrence read is dated to somewhere between 93.9 Mya and 85.7 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Late Cretaceous — about 25 of 25 occurrencesLate Cretaceous94–94 Mya — about 0.7 occurrences94–93 Mya — about 2 occurrences93–93 Mya — about 2 occurrences93–93 Mya — about 2 occurrences93–93 Mya — about 2 occurrences93–92 Mya — about 2 occurrences92–92 Mya — about 2 occurrences92–92 Mya — about 2 occurrences92–91 Mya — about 2 occurrences91–91 Mya — about 2 occurrences91–91 Mya — about 2 occurrences91–90 Mya — about 2 occurrences90–90 Mya — about 2 occurrences90–90 Mya — about 2 occurrences90–89 Mya — about 0.0 occurrences89–89 Mya — about 0.0 occurrences89–89 Mya — about 0.0 occurrences89–89 Mya — about 0.0 occurrences89–88 Mya — about 0.0 occurrences88–88 Mya — about 0.0 occurrences88–88 Mya — about 0.0 occurrences88–87 Mya — about 0.0 occurrences87–87 Mya — about 0.0 occurrences87–87 Mya — about 0.0 occurrences87–86 Mya — about 0.0 occurrences86–86 Mya — about 0.0 occurrences86–86 Mya — about 0.0 occurrences86–86 Mya — about 0.0 occurrences94.4 Mya85.2 Mya

25 occurrences of Trigonarca californica 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

25 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

3 formations

Ladd — 33.70°N, 117.60°WLadd — 33.75°N, 117.65°WYolo — 38.52°N, 122.10°WPinos — 28.19°N, 115.16°W

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The named rock units Trigonarca californica has been recovered from, largest first. Drawn where the rock is now, not where it formed. 1 occurrence has no formation on record, which is common for older literature.

Trigonarca californica and its relatives

Late Cretaceous

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

Found in the same rock

79 taxa

The Paleobiology Database records 25 sites for Trigonarca californica, 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

7 references

Each of the 25 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 Trigonarca californica

Source
iDigBio
Credit
via iDigBio
Licence
CC BY
Commercial use
the licence allows it

No 3D scan of Trigonarca californica 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 itTrigonarca through timeFormations of the Late CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Packard 1922