Trimerella

Trimerella

via iDigBio · 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
TrimerellidaePBDB
Diet
suspension feederPBDB, for Trimerellida
Life habit
epifaunalPBDB, for Trimerellida
Motility
stationaryPBDB, for Trimerellida
Vision
blindPBDB, for Craniata
Environment
marinePBDB, for Trimerellida

Time the record covers

At least 7.9 million years on record.

The record covers at least 432.9 Mya to 425 Mya. No occurrence read is dated outside 443.1 Mya to 422.7 Mya.

Ordovician — about 0 of 37 occurrencesSilurian — about 37 of 37 occurrencesSilurian444–443 Mya — about 0.1 occurrences443–442 Mya — about 0.3 occurrences442–441 Mya — about 0.3 occurrences441–441 Mya — about 0.3 occurrences441–440 Mya — about 0.3 occurrences440–439 Mya — about 0.3 occurrences439–439 Mya — about 0.3 occurrences439–438 Mya — about 2 occurrences438–437 Mya — about 2 occurrences437–436 Mya — about 2 occurrences436–436 Mya — about 2 occurrences436–435 Mya — about 2 occurrences435–434 Mya — about 2 occurrences434–434 Mya — about 2 occurrences434–433 Mya — about 2 occurrences433–432 Mya — about 3 occurrences432–431 Mya — about 3 occurrences431–431 Mya — about 3 occurrences431–430 Mya — about 1 occurrence430–429 Mya — about 0.7 occurrences429–429 Mya — about 0.7 occurrences429–428 Mya — about 0.7 occurrences428–427 Mya — about 0.7 occurrences427–426 Mya — about 0.7 occurrences426–426 Mya — about 0.7 occurrences426–425 Mya — about 0.7 occurrences425–424 Mya — about 1.0 occurrences424–424 Mya — about 1 occurrence424–423 Mya — about 1 occurrence423–422 Mya — about 0.3 occurrences432.9 Mya425 Mya443.6 Mya422.2 Mya

37 occurrences of Trimerella on record, most of them in the Silurian. 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

37 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

13 formations

Attawapiskat — 53.18°N, 81.12°WAttawapiskat — 53.20°N, 81.50°WSlite Beds — 57.72°N, 18.80°EGower — 42.02°N, 91.65°WGower — 43.00°N, 91.00°WCape Phillips — 75.80°N, 94.50°WLouisville Limestone — 40.55°N, 84.57°WHemse Beds — 57.37°N, 18.69°EGuelph — 43.68°N, 80.43°WLouisville — 40.58°N, 86.67°WDashtygoi Beds — 51.00°N, 92.00°EGreengrove — 33.00°S, 149.00°EWhittaker — 63.77°N, 125.27°WWalker Volcanics — 35.00°S, 149.00°ECedar Lake Dolomite — 53.18°N, 99.27°W

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The named rock units Trimerella has been recovered from, largest first. Drawn where the rock is now, not where it formed. 6 occurrences have no formation on record, which is common for older literature.

Trimerella and its relatives

Silurian

Where Trimerella and its relatives were recorded in the Silurian.

Found in the same rock

482 taxa

The Paleobiology Database records 25 sites for Trimerella, 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

16 references

Each of the 37 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. 4 further references are not listed. 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 Trimerella

Source
iDigBio
Credit
via iDigBio
Licence
not stated by the source
Commercial use
cannot be read from the licence given — check the record

No 3D scan of Trimerella 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 itTrimerellidae through timeFormations of the SilurianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Billings 1862