Trigonucula sakawana

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

On record

Recorded, not inferred
Sits inside
TrigonuculaPBDB
Diet
deposit feeder, suspension feederPBDB, for Nuculidae
Life habit
infaunalPBDB, for Nuculidae
Motility
facultatively mobilePBDB, for Nuculidae
Vision
blindPBDB, for Bivalvia
Environment
coastal,inner shelf,outer shelf,oceanicPBDB, for Nuculidae

Time the record covers

At most 9.7 million years on record.

Every occurrence read is dated to somewhere between 237 Mya and 227.3 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Middle Triassic — about 0 of 3 occurrencesLate Triassic — about 3 of 3 occurrencesLate Triassic237–237 Mya — about 0.1 occurrences237–236 Mya — about 0.1 occurrences236–236 Mya — about 0.1 occurrences236–236 Mya — about 0.1 occurrences236–235 Mya — about 0.1 occurrences235–235 Mya — about 0.1 occurrences235–235 Mya — about 0.1 occurrences235–234 Mya — about 0.1 occurrences234–234 Mya — about 0.1 occurrences234–234 Mya — about 0.1 occurrences234–233 Mya — about 0.1 occurrences233–233 Mya — about 0.1 occurrences233–233 Mya — about 0.1 occurrences233–232 Mya — about 0.1 occurrences232–232 Mya — about 0.1 occurrences232–231 Mya — about 0.1 occurrences231–231 Mya — about 0.1 occurrences231–231 Mya — about 0.1 occurrences231–230 Mya — about 0.1 occurrences230–230 Mya — about 0.1 occurrences230–230 Mya — about 0.1 occurrences230–229 Mya — about 0.1 occurrences229–229 Mya — about 0.1 occurrences229–229 Mya — about 0.1 occurrences229–228 Mya — about 0.1 occurrences228–228 Mya — about 0.1 occurrences228–228 Mya — about 0.1 occurrences228–227 Mya — about 0.1 occurrences237.5 Mya226.8 Mya

3 occurrences of Trigonucula sakawana 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

3 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

1 formation

Sabudani — 35.72°N, 139.22°ESabudani — 33.50°N, 133.27°ESabudani — 33.75°N, 134.33°E

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The named rock units Trigonucula sakawana has been recovered from, largest first. Drawn where the rock is now, not where it formed.

Trigonucula sakawana and its relatives

Late Triassic

Where Trigonucula sakawana and its relatives were recorded in the Late Triassic.

Found in the same rock

35 taxa

The Paleobiology Database records 3 sites for Trigonucula sakawana, 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 3 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. Each entry links to the Paleobiology Database's own record for the work.

Media and terms

Media content0

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

No 3D scan of Trigonucula sakawana 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 itTrigonucula through timeFormations of the Late TriassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Ichikawa 1949