Crotalocrinites

Crotalocrinites is a genus of extinct crinoid belonging to the family Crotalocrinitidae. These feather stars were stationary intermediate-level organisms feeding on suspension epifauna. They lived in the Silurian period, from the Upper Wenlock age to the Ludlow age.

Crotalocrinites

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
CrotalocrinitidaePBDB
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 19 million years on record.

The record covers at least 432.9 Mya to 413.02 Mya. No occurrence read is dated outside 443.1 Mya to 410.62 Mya.

Ordovician — about 0 of 30 occurrencesSilurian — about 26 of 30 occurrencesSilurianDevonian — about 4 of 30 occurrencesDevonian444–443 Mya — about 0.1 occurrences443–441 Mya — about 0.2 occurrences441–440 Mya — about 0.2 occurrences440–439 Mya — about 0.2 occurrences439–438 Mya — about 0.4 occurrences438–437 Mya — about 0.6 occurrences437–436 Mya — about 0.6 occurrences436–435 Mya — about 0.6 occurrences435–434 Mya — about 0.6 occurrences434–432 Mya — about 2 occurrences432–431 Mya — about 4 occurrences431–430 Mya — about 3 occurrences430–429 Mya — about 2 occurrences429–428 Mya — about 2 occurrences428–427 Mya — about 2 occurrences427–426 Mya — about 1 occurrence426–425 Mya — about 1 occurrence425–423 Mya — about 2 occurrences423–422 Mya — about 1 occurrence422–421 Mya — about 0.7 occurrences420–419 Mya — about 0.3 occurrences419–418 Mya — about 0.5 occurrences418–417 Mya — about 0.5 occurrences417–416 Mya — about 0.5 occurrences416–414 Mya — about 0.5 occurrences414–413 Mya — about 0.5 occurrences413–412 Mya — about 0.5 occurrences412–411 Mya — about 0.5 occurrences411–410 Mya — about 0.2 occurrences432.9 Mya413.02 Mya443.8 Mya410 Mya

30 occurrences of Crotalocrinites 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

30 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

13 formations

Racine — 43.04°N, 87.91°WRacine — 42.73°N, 87.78°WRacine — 42.88°N, 88.04°WRacine — 43.01°N, 88.38°WRacine — 42.00°N, 88.00°WRacine — 41.85°N, 87.65°WMount Ida — 36.77°S, 144.77°ESteinsfjorden — 68.79°N, 14.95°EWabash — 40.42°N, 85.80°WGower — 41.51°N, 90.58°WGoloskov Subsuite — 48.53°N, 26.67°EKabanka — 56.00°N, 60.00°ERacine Dolomite — 41.57°N, 87.60°WHopkinton — 42.17°N, 90.58°WKhandyg — 62.20°N, 138.15°EAmain — 44.68°N, 104.50°EMuch Wenlock — 52.50°N, 2.08°WKaugatuma — 58.12°N, 22.19°E

Loading coastlines…

The named rock units Crotalocrinites has been recovered from, largest first. Drawn where the rock is now, not where it formed. 7 occurrences have no formation on record, which is common for older literature.

Crotalocrinites and its relatives

Silurian

Where Crotalocrinites and its relatives were recorded in the Silurian.

Found in the same rock

501 taxa

The Paleobiology Database records 26 sites for Crotalocrinites, 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 30 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 Crotalocrinites

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

No 3D scan of Crotalocrinites 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 itCrotalocrinitidae through timeFormations of the SilurianThe world it lived on

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