Petraia

Petraia

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
PetraiidaePBDB
Diet
suspension feederPBDB, for Rugosa
Life habit
epifaunalPBDB, for Rugosa
Motility
stationary, attachedPBDB, for Rugosa
Vision
blindPBDB, for Anthozoa
Environment
marinePBDB, for Rugosa

Time the record covers

At least 22 million years on record.

The record covers at least 445.2 Mya to 422.7 Mya. No occurrence read is dated outside 449.2 Mya to 413.02 Mya.

Ordovician — about 3 of 5 occurrencesOrdovicianSilurian — about 1 of 5 occurrencesSilurianDevonian — about 1 of 5 occurrencesDevonian450–449 Mya — about 0.2 occurrences449–447 Mya — about 0.9 occurrences447–446 Mya — about 0.9 occurrences446–445 Mya — about 0.7 occurrences445–444 Mya — about 0.2 occurrences444–442 Mya — about 0.1 occurrences442–441 Mya — about 0.1 occurrences441–440 Mya — about 0.1 occurrences440–439 Mya — about 0.1 occurrences439–437 Mya — about 0.1 occurrences437–436 Mya — about 0.1 occurrences436–435 Mya — about 0.1 occurrences435–434 Mya — about 0.1 occurrences434–432 Mya — about 0.1 occurrences432–431 Mya — about 0.1 occurrences431–430 Mya — about 0.1 occurrences430–429 Mya — about 0.1 occurrences429–427 Mya — about 0.1 occurrences427–426 Mya — about 0.1 occurrences426–425 Mya — about 0.1 occurrences425–424 Mya — about 0.1 occurrences424–422 Mya — about 0.1 occurrences422–421 Mya — about 0.2 occurrences421–420 Mya — about 0.2 occurrences420–419 Mya — about 0.1 occurrences419–417 Mya — about 0.1 occurrences417–416 Mya — about 0.1 occurrences416–415 Mya — about 0.1 occurrences415–414 Mya — about 0.1 occurrences414–412 Mya — about 0.1 occurrences445.2 Mya422.7 Mya449.9 Mya412.3 Mya

5 occurrences of Petraia 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

5 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

3 formations

Henryhouse — 35.08°N, 98.24°WDolhir — 52.93°N, 3.18°WGlyn — 52.93°N, 3.18°W

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The named rock units Petraia has been recovered from, largest first. Drawn where the rock is now, not where it formed. 2 occurrences have no formation on record, which is common for older literature.

Petraia and its relatives

Ordovician

Where Petraia and its relatives were recorded in the Ordovician.

Found in the same rock

240 taxa

The Paleobiology Database records 5 sites for Petraia, 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

4 references

Each of the 5 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 Petraia

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

No 3D scan of Petraia 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 itPetraiidae through timeFormations of the OrdovicianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Münster 1839