Onychocrinus

Onychocrinus is an extinct genus of feathered crinoids that lived during the Carboniferous period, approximately 353.8 to 318.1 million years ago. It belonged to the family Synerocrinidae.

Onychocrinus

Hectonichus · CC BY-SA 3.0 · via Wikipedia/Commons. 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
SynerocrinidaePBDB
Diet
suspension feederPBDB, for Taxocrinida
Life habit
epifaunalPBDB, for Taxocrinida
Motility
stationaryPBDB, for Taxocrinida
Vision
blindPBDB, for Crinoidea
Environment
marinePBDB, for Echinodermata

Time the record covers

At least 21 million years on record.

The record covers at least 351.9 Mya to 330.3 Mya. No occurrence read is dated outside 358.86 Mya to 326.9 Mya.

Devonian — about 0 of 27 occurrencesCarboniferous — about 27 of 27 occurrencesCarboniferous359–358 Mya — about 0.1 occurrences358–357 Mya — about 0.2 occurrences357–356 Mya — about 0.2 occurrences356–355 Mya — about 0.2 occurrences355–354 Mya — about 0.2 occurrences354–353 Mya — about 0.2 occurrences353–352 Mya — about 0.2 occurrences352–351 Mya — about 0.5 occurrences351–350 Mya — about 0.5 occurrences350–348 Mya — about 0.5 occurrences348–347 Mya — about 0.5 occurrences347–346 Mya — about 2 occurrences346–345 Mya — about 3 occurrences345–344 Mya — about 3 occurrences344–343 Mya — about 3 occurrences343–342 Mya — about 2 occurrences342–341 Mya — about 2 occurrences341–340 Mya — about 2 occurrences336–335 Mya — about 0.4 occurrences335–334 Mya — about 0.6 occurrences334–333 Mya — about 0.6 occurrences333–332 Mya — about 0.6 occurrences332–331 Mya — about 0.6 occurrences331–330 Mya — about 1 occurrence330–328 Mya — about 1 occurrence328–327 Mya — about 1 occurrence327–326 Mya — about 0.6 occurrences351.9 Mya330.3 Mya359.5 Mya326.3 Mya

27 occurrences of Onychocrinus on record, most of them in the Carboniferous. 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

27 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

Muldraugh — 40.04°N, 86.87°WMuldraugh — 40.06°N, 86.90°WEdwardsville — 39.50°N, 86.50°WEdwardsville — 39.75°N, 86.67°WEdwardsville — 39.25°N, 86.33°WEdwardsville — 39.00°N, 86.25°WEdwardsville — 39.04°N, 86.50°WGlen Dean Limestone — 38.17°N, 86.57°WGlen Dean Limestone — 37.87°N, 86.62°WGlen Dean Limestone — 38.89°N, 86.90°WGlen Dean Limestone — 36.94°N, 84.54°WLower Limestone — 56.10°N, 3.18°WLower Limestone — 55.08°N, 2.90°WFort Payne — 36.78°N, 85.10°WBanff — 52.25°N, 117.25°WBorden — 37.70°N, 85.87°W

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The named rock units Onychocrinus has been recovered from, largest first. Drawn where the rock is now, not where it formed.

Onychocrinus and its relatives

Carboniferous

Where Onychocrinus and its relatives were recorded in the Carboniferous.

Found in the same rock

354 taxa

The Paleobiology Database records 23 sites for Onychocrinus, 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 27 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 Onychocrinus

Credit
Hectonichus
Licence
CC BY-SA 3.0
Commercial use
the licence allows it

No 3D scan of Onychocrinus was found in MorphoSource and Sketchfab.

Smithsonian Open Access was 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 itSynerocrinidae through timeFormations of the CarboniferousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Lyon and Cassidy 1860