Placocystites

Placocystites

User:Captmondo · CC BY-SA 3.0 · via Wikidata/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
AnomalocystitidaePBDB
Diet
suspension feederPBDB, for Mitrata
Life habit
epifaunalPBDB, for Mitrata
Motility
passively mobilePBDB, for Mitrata
Vision
blindPBDB, for Stylophora
Environment
marinePBDB, for Echinodermata

Time the record covers

At least 14 million years on record.

The record covers at least 445.2 Mya to 430.6 Mya. No occurrence read is dated outside 448.8 Mya to 426.7 Mya.

Ordovician — about 1 of 2 occurrencesOrdovicianSilurian — about 1 of 2 occurrencesSilurian449–449 Mya — about 0.1 occurrences449–448 Mya — about 0.2 occurrences448–447 Mya — about 0.2 occurrences447–446 Mya — about 0.2 occurrences446–445 Mya — about 0.2 occurrences445–445 Mya — about 0.1 occurrences431–430 Mya — about 0.1 occurrences430–429 Mya — about 0.2 occurrences429–429 Mya — about 0.2 occurrences429–428 Mya — about 0.2 occurrences428–427 Mya — about 0.2 occurrences427–426 Mya — about 0.1 occurrences445.2 Mya430.6 Mya449.3 Mya426.2 Mya

2 occurrences of Placocystites on record, most of them in the Ordovician. 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

Much Wenlock Limestone — 52.52°N, 2.10°WUpper Ktaoua — 30.77°N, 5.66°W

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

Placocystites and its relatives

Ordovician

Where Placocystites and its relatives were recorded in the Ordovician.

Found in the same rock

45 taxa

The Paleobiology Database records 2 sites for Placocystites, 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

2 references

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 Placocystites

Credit
User:Captmondo
Licence
CC BY-SA 3.0
Commercial use
the licence allows it

No 3D scan of Placocystites 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 itAnomalocystitidae through timeFormations of the OrdovicianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0.