Trigonotreta semicircularis

No picture of Trigonotreta semicircularis was found. Wikidata and iDigBio were searched and had none. Wikipedia and 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 Trigonotreta semicircularis, or no answer at all. This entry cannot say which.

On record

Recorded, not inferred
Sits inside
TrigonotretaPBDB
Diet
suspension feederPBDB, for Spiriferida
Life habit
epifaunalPBDB, for Spiriferida
Motility
stationaryPBDB, for Spiriferida
Vision
blindPBDB, for Rhynchonellata
Environment
marinePBDB, for Lophophorata

Time the record covers

At most 11 million years on record.

Every occurrence read is dated to somewhere between 293.52 Mya and 283.3 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Permian — about 4 of 4 occurrencesPermian294–293 Mya — about 0.2 occurrences293–293 Mya — about 0.4 occurrences293–293 Mya — about 0.4 occurrences293–292 Mya — about 0.4 occurrences292–292 Mya — about 0.4 occurrences292–291 Mya — about 0.4 occurrences291–291 Mya — about 0.4 occurrences291–291 Mya — about 0.4 occurrences291–290 Mya — about 0.4 occurrences290–290 Mya — about 0.2 occurrences290–290 Mya — about 0.0 occurrences290–289 Mya — about 0.0 occurrences289–289 Mya — about 0.0 occurrences289–288 Mya — about 0.0 occurrences288–288 Mya — about 0.0 occurrences288–288 Mya — about 0.0 occurrences288–287 Mya — about 0.0 occurrences287–287 Mya — about 0.0 occurrences287–287 Mya — about 0.0 occurrences287–286 Mya — about 0.0 occurrences286–286 Mya — about 0.0 occurrences286–285 Mya — about 0.0 occurrences285–285 Mya — about 0.0 occurrences285–285 Mya — about 0.0 occurrences285–284 Mya — about 0.0 occurrences284–284 Mya — about 0.0 occurrences284–284 Mya — about 0.0 occurrences284–283 Mya — about 0.0 occurrences294 Mya282.8 Mya

4 occurrences of Trigonotreta semicircularis on record, most of them in the Permian. 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

4 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

Dingjiazhai — 25.06°N, 99.13°EDingjiazhai — 24.88°N, 99.14°EKongshuhe — 25.50°N, 98.60°EZhanjin — 34.28°N, 80.36°E

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

Trigonotreta semicircularis and its relatives

Permian

Where Trigonotreta semicircularis and its relatives were recorded in the Permian.

Found in the same rock

28 taxa

The Paleobiology Database records 4 sites for Trigonotreta semicircularis, 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

3 references

Each of the 4 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 Trigonotreta semicircularis was found. Wikidata and iDigBio were searched and had none.

Wikipedia and 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 Trigonotreta semicircularis, or no answer at all. This entry cannot say which.

No 3D scan of Trigonotreta semicircularis 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 itTrigonotreta through timeFormations of the PermianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Shen et al. 2000)