Acacocrinus

Acacocrinus

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

Time the record covers

At most 17 million years on record.

Every occurrence read is dated to somewhere between 443.1 Mya and 426.7 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Ordovician — about 0 of 2 occurrencesSilurian — about 2 of 2 occurrencesSilurian444–443 Mya — about 0.0 occurrences443–442 Mya — about 0.1 occurrences442–442 Mya — about 0.1 occurrences442–441 Mya — about 0.1 occurrences441–441 Mya — about 0.1 occurrences441–440 Mya — about 0.1 occurrences440–440 Mya — about 0.1 occurrences440–439 Mya — about 0.1 occurrences439–438 Mya — about 0.1 occurrences438–438 Mya — about 0.1 occurrences438–437 Mya — about 0.1 occurrences437–437 Mya — about 0.1 occurrences437–436 Mya — about 0.1 occurrences436–435 Mya — about 0.1 occurrences435–435 Mya — about 0.1 occurrences435–434 Mya — about 0.1 occurrences434–434 Mya — about 0.1 occurrences434–433 Mya — about 0.1 occurrences433–433 Mya — about 0.1 occurrences433–432 Mya — about 0.1 occurrences432–431 Mya — about 0.1 occurrences431–431 Mya — about 0.1 occurrences431–430 Mya — about 0.1 occurrences430–430 Mya — about 0.1 occurrences430–429 Mya — about 0.1 occurrences429–429 Mya — about 0.1 occurrences429–428 Mya — about 0.1 occurrences428–427 Mya — about 0.1 occurrences427–427 Mya — about 0.1 occurrences427–426 Mya — about 0.0 occurrences443.6 Mya426.2 Mya

2 occurrences of Acacocrinus 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

2 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

2 formations

Brassfield — 39.80°N, 82.98°WLaurel Limestone — 39.43°N, 85.63°W

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

Acacocrinus and its relatives

Silurian

Where Acacocrinus and its relatives were recorded in the Silurian.

Found in the same rock

69 taxa

The Paleobiology Database records 2 sites for Acacocrinus, 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

1 reference

Each of the 2 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. Each entry links to the Paleobiology Database's own record for the work.

Media and terms

Media content1

Picture of Acacocrinus

Source
iDigBio
Credit
via iDigBio
Licence
CC0
Commercial use
the licence allows it

No 3D scan of Acacocrinus was found in Sketchfab.

Smithsonian Open Access and MorphoSource were not reached for this taxon, so this list is what the others held rather than everything there is.

This is what the site found, which is not the same as what exists.

Keep going

What may have been alongside itPeriechocrinidae through timeFormations of the SilurianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Wachsmuth and Springer 1897