Trigonia

Searched as Trigonia castor. The Paleobiology Database treats Trigonia as the accepted name.

Trigonia

Uncredited · via Wikidata/Commons. 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
TrigoniinaePBDB
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 most 2.6 million years on record.

The one occurrence read is dated to somewhere between 154.8 Mya and 152.21 Mya, which is a dating window rather than a span.

Late Jurassic — about 1 of 1 occurrenceLate Jurassic155–155 Mya — about 0.0 occurrences155–155 Mya — about 0.0 occurrences155–154 Mya — about 0.0 occurrences154–154 Mya — about 0.0 occurrences154–154 Mya — about 0.0 occurrences154–154 Mya — about 0.0 occurrences154–154 Mya — about 0.0 occurrences154–154 Mya — about 0.0 occurrences154–154 Mya — about 0.0 occurrences154–154 Mya — about 0.0 occurrences154–154 Mya — about 0.0 occurrences154–153 Mya — about 0.0 occurrences153–153 Mya — about 0.0 occurrences153–153 Mya — about 0.0 occurrences153–153 Mya — about 0.0 occurrences153–153 Mya — about 0.0 occurrences153–153 Mya — about 0.0 occurrences153–153 Mya — about 0.0 occurrences153–153 Mya — about 0.0 occurrences153–152 Mya — about 0.0 occurrences152–152 Mya — about 0.0 occurrences152–152 Mya — about 0.0 occurrences155.3 Mya151.71 Mya

1 occurrence of Trigonia on record, most of them in the Late Jurassic. 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.

Found in

1 formation

Masajid — 30.68°N, 33.42°E

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

Trigonia and its relatives

Late Jurassic

Where Trigonia and its relatives were recorded in the Late Jurassic.

Found in the same rock

1,619 taxa

The Paleobiology Database records 610 sites for Trigonia, and this reads 240 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 doi.org. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.

Media and terms

Media content2

Picture of Trigonia

Credit
nobody named on the record
Licence
not stated by the source
Commercial use
cannot be read from the licence given — check the record

3D model

Source
Sketchfab
Licence
CC Attribution
Commercial use
cannot be read from the licence given — check the record

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 itTrigoniinae through timeFormations of the Late JurassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Bruguière 1789