Cheirocrinus

Cheirocrinus

via iDigBio · CC0 · 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
CheirocrinidaePBDB
Diet
suspension feederPBDB, for Rhombifera
Life habit
intermediate-level epifaunalPBDB, for Rhombifera
Motility
stationary, attachedPBDB, for Rhombifera
Vision
blindPBDB, for Rhombifera
Environment
marinePBDB, for Echinodermata

Time the record covers

At least 44 million years on record.

The record covers at least 477.1 Mya to 432.9 Mya. No occurrence read is dated outside 491 Mya to 426.7 Mya.

Cambrian — about 1 of 68 occurrencesOrdovician — about 60 of 68 occurrencesOrdovicianSilurian — about 7 of 68 occurrencesSilurian492–490 Mya — about 0.1 occurrences490–488 Mya — about 0.3 occurrences488–486 Mya — about 0.7 occurrences486–483 Mya — about 1 occurrence483–481 Mya — about 1 occurrence481–479 Mya — about 1 occurrence479–477 Mya — about 1 occurrence477–474 Mya — about 1 occurrence474–472 Mya — about 1 occurrence472–470 Mya — about 2 occurrences470–468 Mya — about 5 occurrences468–466 Mya — about 7 occurrences466–463 Mya — about 4 occurrences463–461 Mya — about 1 occurrence461–459 Mya — about 2 occurrences459–457 Mya — about 3 occurrences457–454 Mya — about 4 occurrences454–452 Mya — about 6 occurrences452–450 Mya — about 7 occurrences450–448 Mya — about 5 occurrences448–445 Mya — about 5 occurrences445–443 Mya — about 2 occurrences443–441 Mya — about 0.2 occurrences441–439 Mya — about 0.1 occurrences439–437 Mya — about 0.1 occurrences437–434 Mya — about 0.1 occurrences434–432 Mya — about 0.9 occurrences432–430 Mya — about 2 occurrences430–428 Mya — about 2 occurrences428–425 Mya — about 1.0 occurrences477.1 Mya432.9 Mya492 Mya425 Mya

68 occurrences of Cheirocrinus 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

68 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

36 formations

Val d'Homs — 43.00°N, 3.00°ERochester Shale — 43.15°N, 77.06°WRochester Shale — 43.10°N, 79.06°WRochester Shale — 43.15°N, 79.04°WVerulam — 45.42°N, 75.72°WVerulam — 45.62°N, 74.78°WKings Falls — 43.21°N, 75.46°WDenley Limestone — 43.21°N, 75.46°WDalby — 57.00°N, 17.00°EDalby — 60.92°N, 15.09°EKraluv Dvur — 50.00°N, 14.00°EKraluv Dvur — 50.04°N, 14.41°EDolhir — 52.93°N, 3.18°WBromide — 34.00°N, 97.00°WLindsay — 45.50°N, 81.00°WAsaphus Limestone — 58.38°N, 14.70°EAsaphus Limestone — 58.56°N, 13.42°EFosses — 50.33°N, 4.52°ECrown Point — 50.20°N, 63.50°WLaval — 47.00°N, 72.00°WSugar River — 43.21°N, 75.46°WSularp Shale — 55.71°N, 13.32°EWenallt — 51.83°N, 3.58°WGasport Limstone — 43.20°N, 78.58°WGlenwood — 44.00°N, 92.00°WPlatteville — 44.00°N, 92.00°WPecatonica — 42.00°N, 90.50°WAmadjuak — 63.72°N, 68.97°WLa Maurerie — 43.46°N, 3.00°ESchistes de Saint-Chinian — 43.00°N, 3.00°E

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The named rock units Cheirocrinus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 12 further formations hold fewer occurrences each and are not listed. 12 occurrences have no formation on record, which is common for older literature.

Cheirocrinus and its relatives

Ordovician

Where Cheirocrinus and its relatives were recorded in the Ordovician.

Found in the same rock

898 taxa

The Paleobiology Database records 65 sites for Cheirocrinus, 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

32 references

Each of the 68 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. 20 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 Cheirocrinus

Source
iDigBio
Credit
via iDigBio
Licence
CC0
Commercial use
the licence allows it

No 3D scan was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.

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

Keep going

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

Occurrence data from the Paleobiology Database, CC BY 4.0. Eichwald 1856