Icthyocrinus

Icthyocrinus

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

Time the record covers

At least 22 million years on record.

The record covers at least 432.9 Mya to 410.62 Mya. No occurrence read is dated outside 443.1 Mya to 399.5 Mya.

Ordovician — about 0 of 29 occurrencesSilurian — about 24 of 29 occurrencesSilurianDevonian — about 5 of 29 occurrencesDevonian444–442 Mya — about 0.2 occurrences442–441 Mya — about 0.5 occurrences441–439 Mya — about 0.5 occurrences439–438 Mya — about 0.5 occurrences438–436 Mya — about 0.5 occurrences436–435 Mya — about 0.5 occurrences435–433 Mya — about 0.5 occurrences433–432 Mya — about 3 occurrences432–430 Mya — about 4 occurrences430–429 Mya — about 4 occurrences429–427 Mya — about 4 occurrences427–426 Mya — about 2 occurrences426–424 Mya — about 0.9 occurrences424–423 Mya — about 0.9 occurrences423–421 Mya — about 0.1 occurrences421–420 Mya — about 0.1 occurrences420–418 Mya — about 0.4 occurrences418–417 Mya — about 0.5 occurrences417–415 Mya — about 0.5 occurrences415–414 Mya — about 0.5 occurrences414–412 Mya — about 0.9 occurrences412–411 Mya — about 1 occurrence411–409 Mya — about 0.2 occurrences409–408 Mya — about 0.1 occurrences408–406 Mya — about 0.1 occurrences406–405 Mya — about 0.1 occurrences405–403 Mya — about 0.1 occurrences403–402 Mya — about 0.1 occurrences402–400 Mya — about 0.1 occurrences400–399 Mya — about 0.1 occurrences432.9 Mya410.62 Mya444 Mya398.6 Mya

29 occurrences of Icthyocrinus 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

29 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

15 formations

Rochester Shale — 43.15°N, 77.62°WRochester Shale — 43.10°N, 79.06°WRochester Shale — 43.17°N, 78.68°WGasport Limstone — 43.20°N, 78.58°WHenryhouse — 35.08°N, 98.24°WHenryhouse — 34.73°N, 96.63°WRacine — 42.00°N, 88.00°WRacine — 41.85°N, 87.65°WRoncelles — 48.83°N, 64.48°WIrondequoit Limestone — 43.21°N, 77.58°WGower — 41.51°N, 90.58°WScotch Grove — 42.17°N, 91.11°WLaurel Limestone — 39.43°N, 85.63°WLaurel — 39.50°N, 85.47°WWaldron Shale — 39.45°N, 85.67°WRochester — 43.17°N, 79.03°WRochester Shale — 43.03°N, 79.28°WMuch Wenlock — 52.50°N, 2.08°WLochkov — 50.03°N, 14.33°E

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The named rock units Icthyocrinus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 5 occurrences have no formation on record, which is common for older literature.

Icthyocrinus and its relatives

Silurian

Where Icthyocrinus and its relatives were recorded in the Silurian.

Found in the same rock

502 taxa

The Paleobiology Database records 25 sites for Icthyocrinus, 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 29 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 content1

Picture of Icthyocrinus

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 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 itFlexibilia through timeFormations of the SilurianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Conrad 1842