Celmus

Celmus is an extinct genus from a well-known class of fossil marine arthropods, the trilobites. It lived during the later part of the Arenig stage of the Ordovician Period, approximately 471 to 478 million years ago.

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

On record

Recorded, not inferred
Sits inside
RaymondinidaePBDB
Diet
carnivorePBDB, for Trilobita
Life habit
low-level epifaunalPBDB, for Trilobita
Motility
fast-movingPBDB, for Trilobita
Vision
well-developedPBDB, for Raymondinidae
Environment
marinePBDB, for Trilobita

Time the record covers

At least 18 million years on record.

The record covers at least 471.3 Mya to 452.8 Mya. No occurrence read is dated outside 486.85 Mya to 445.2 Mya.

Cambrian — about 0 of 19 occurrencesOrdovician — about 19 of 19 occurrencesOrdovician488–486 Mya — about 0.0 occurrences486–485 Mya — about 0.1 occurrences485–483 Mya — about 0.1 occurrences483–482 Mya — about 0.1 occurrences482–480 Mya — about 0.1 occurrences480–479 Mya — about 0.1 occurrences479–478 Mya — about 0.1 occurrences478–476 Mya — about 0.2 occurrences476–475 Mya — about 0.3 occurrences475–473 Mya — about 0.3 occurrences473–472 Mya — about 0.6 occurrences472–470 Mya — about 3 occurrences470–469 Mya — about 3 occurrences469–467 Mya — about 1 occurrence467–466 Mya — about 1 occurrence466–465 Mya — about 1.0 occurrences465–463 Mya — about 1.0 occurrences463–462 Mya — about 1.0 occurrences462–460 Mya — about 1.0 occurrences460–459 Mya — about 1.0 occurrences459–457 Mya — about 1 occurrence457–456 Mya — about 0.3 occurrences456–454 Mya — about 0.3 occurrences454–453 Mya — about 0.3 occurrences453–452 Mya — about 0.4 occurrences452–450 Mya — about 0.4 occurrences450–449 Mya — about 0.4 occurrences449–447 Mya — about 0.4 occurrences447–446 Mya — about 0.4 occurrences446–444 Mya — about 0.2 occurrences471.3 Mya452.8 Mya487.7 Mya444.4 Mya

19 occurrences of Celmus on record, most of them in the Ordovician. 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

19 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

5 formations

Table Cove — 50.36°N, 57.54°WTangtou — 32.07°N, 119.26°ETangtou — 32.00°N, 119.00°EAntelope Valley — 36.88°N, 116.65°WTourmakeady — 53.69°N, 9.37°WChedao — 36.08°N, 106.75°E

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The named rock units Celmus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 9 occurrences have no formation on record, which is common for older literature.

Celmus and its relatives

Ordovician

Where Celmus and its relatives were recorded in the Ordovician.

Found in the same rock

226 taxa

The Paleobiology Database records 16 sites for Celmus, 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

9 references

Each of the 19 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 Celmus 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 Celmus, or no answer at all. This entry cannot say which.

No 3D scan of Celmus 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.

The description on this site

Licence
CC BY-SA 4.0

This is what the site found, which is not the same as what exists.

Keep going

What may have been alongside itRaymondinidae through timeFormations of the OrdovicianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Angelin 1854