Archaeocrinus

Archaeocrinus

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
RhodocrinitidaePBDB
Diet
suspension feederPBDB, for Diplobathrida
Life habit
upper-level epifaunalPBDB, for Diplobathrida
Motility
stationary, attachedPBDB, for Diplobathrida
Vision
blindPBDB, for Crinoidea
Environment
marinePBDB, for Echinodermata

Time the record covers

At least 8.6 million years on record.

The record covers at least 458.2 Mya to 449.6 Mya. No occurrence read is dated outside 471.3 Mya to 445.2 Mya.

Ordovician — about 34 of 34 occurrencesOrdovician472–471 Mya — about 0.1 occurrences471–470 Mya — about 0.1 occurrences470–469 Mya — about 0.1 occurrences469–468 Mya — about 0.1 occurrences468–467 Mya — about 0.1 occurrences467–466 Mya — about 0.1 occurrences466–465 Mya — about 0.1 occurrences465–465 Mya — about 0.1 occurrences465–464 Mya — about 0.1 occurrences464–463 Mya — about 0.1 occurrences463–462 Mya — about 0.1 occurrences462–461 Mya — about 0.1 occurrences461–460 Mya — about 0.1 occurrences460–459 Mya — about 0.1 occurrences459–458 Mya — about 0.1 occurrences458–457 Mya — about 0.4 occurrences457–456 Mya — about 3 occurrences456–456 Mya — about 3 occurrences456–455 Mya — about 3 occurrences455–454 Mya — about 3 occurrences454–453 Mya — about 2 occurrences453–452 Mya — about 3 occurrences452–451 Mya — about 3 occurrences451–450 Mya — about 4 occurrences450–449 Mya — about 5 occurrences449–448 Mya — about 1 occurrence448–447 Mya — about 1 occurrence447–446 Mya — about 1 occurrence446–446 Mya — about 1 occurrence446–445 Mya — about 0.4 occurrences458.2 Mya449.6 Mya471.8 Mya444.7 Mya

34 occurrences of Archaeocrinus 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

34 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

17 formations

Bromide — 34.00°N, 97.00°WBromide — 34.07°N, 97.17°WBromide — 34.03°N, 97.17°WOttawa — 45.46°N, 75.68°WDecorah Shale — 44.98°N, 93.27°WDecorah Shale — 44.00°N, 92.00°WBobcaygeon-Verulam — 44.57°N, 79.10°WDunleith — 37.07°N, 89.57°WFort Atkinson — 43.13°N, 91.88°WMaquoketa — 44.00°N, 92.00°WGuttenberg — 42.00°N, 90.50°WIon — 42.00°N, 90.50°WScales Shale — 42.00°N, 90.50°WFort Atkinson Limestone — 42.00°N, 93.50°WBenbolt — 36.19°N, 83.93°WVerulam — 44.50°N, 79.16°WLexington Limestone — 37.68°N, 84.68°WLebanon Limestone — 35.57°N, 86.92°WLincolnshire — 36.28°N, 83.60°WBobcaygeon — 44.58°N, 79.09°W

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The named rock units Archaeocrinus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 1 occurrence has no formation on record, which is common for older literature.

Archaeocrinus and its relatives

Ordovician

Where Archaeocrinus and its relatives were recorded in the Ordovician.

Found in the same rock

227 taxa

The Paleobiology Database records 25 sites for Archaeocrinus, 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

14 references

Each of the 34 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. 2 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 Archaeocrinus

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 itRhodocrinitidae through timeFormations of the OrdovicianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Wachsmuth and Springer 1881