Homocrinus

Homocrinus

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

Time the record covers

At least 13 million years on record.

The record covers at least 440.5 Mya to 426.7 Mya. No occurrence read is dated outside 443.1 Mya to 422.7 Mya.

Ordovician — about 0 of 11 occurrencesSilurian — about 11 of 11 occurrencesSilurian444–443 Mya — about 0.1 occurrences443–442 Mya — about 0.4 occurrences442–441 Mya — about 0.4 occurrences441–441 Mya — about 0.4 occurrences441–440 Mya — about 0.2 occurrences440–439 Mya — about 0.1 occurrences439–439 Mya — about 0.1 occurrences439–438 Mya — about 0.1 occurrences438–437 Mya — about 0.1 occurrences437–436 Mya — about 0.1 occurrences436–436 Mya — about 0.1 occurrences436–435 Mya — about 0.1 occurrences435–434 Mya — about 0.1 occurrences434–434 Mya — about 0.1 occurrences434–433 Mya — about 0.1 occurrences433–432 Mya — about 0.7 occurrences432–431 Mya — about 0.7 occurrences431–431 Mya — about 0.7 occurrences431–430 Mya — about 0.7 occurrences430–429 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 0.6 occurrences426–426 Mya — about 0.4 occurrences426–425 Mya — about 0.4 occurrences425–424 Mya — about 0.4 occurrences424–424 Mya — about 0.4 occurrences424–423 Mya — about 0.4 occurrences423–422 Mya — about 0.1 occurrences440.5 Mya426.7 Mya443.6 Mya422.2 Mya

11 occurrences of Homocrinus 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

11 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

7 formations

Rochester Shale — 43.15°N, 77.62°WRochester Shale — 43.10°N, 79.06°WRochester Shale — 43.17°N, 78.68°WCabot Head — 43.14°N, 79.38°WLaurel — 39.50°N, 85.47°WBainbridge Limestone — 37.80°N, 90.05°WRochester Shale — 43.03°N, 79.28°WWaldron Shale — 39.45°N, 85.67°WRacine — 41.65°N, 87.68°W

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The named rock units Homocrinus 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.

Homocrinus and its relatives

Silurian

Where Homocrinus and its relatives were recorded in the Silurian.

Found in the same rock

264 taxa

The Paleobiology Database records 11 sites for Homocrinus, 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

5 references

Each of the 11 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 Homocrinus

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 itHomocrinidae through timeFormations of the SilurianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Hall 1852