Petrianna

No picture of Petrianna was found. Wikidata and iDigBio were searched and had none. Wikipedia and Smithsonian Open Access did not answer, so this is what the others held rather than everything there is. GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Petrianna, or no answer at all. This entry cannot say which.

On record

Recorded, not inferred
Sits inside
CambriidaePBDB
Diet
omnivorePBDB, for Bradoriida
Life habit
nektobenthicPBDB, for Bradoriida
Motility
actively mobilePBDB, for Bradoriida
Vision
blindPBDB, for Bradoriida

Time the record covers

At most 33 million years on record.

Every occurrence read is dated to somewhere between 538.8 Mya and 506.5 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Cambrian — about 2 of 2 occurrencesCambrian539–538 Mya — about 0.0 occurrences538–537 Mya — about 0.0 occurrences537–536 Mya — about 0.0 occurrences536–535 Mya — about 0.0 occurrences535–534 Mya — about 0.0 occurrences534–533 Mya — about 0.0 occurrences533–532 Mya — about 0.0 occurrences532–530 Mya — about 0.0 occurrences530–529 Mya — about 0.0 occurrences529–528 Mya — about 0.0 occurrences528–527 Mya — about 0.0 occurrences527–526 Mya — about 0.0 occurrences526–525 Mya — about 0.0 occurrences525–524 Mya — about 0.0 occurrences524–523 Mya — about 0.0 occurrences523–522 Mya — about 0.0 occurrences522–520 Mya — about 0.0 occurrences520–519 Mya — about 0.0 occurrences519–518 Mya — about 0.0 occurrences518–517 Mya — about 0.0 occurrences517–516 Mya — about 0.0 occurrences516–515 Mya — about 0.1 occurrences515–514 Mya — about 0.2 occurrences514–513 Mya — about 0.2 occurrences513–511 Mya — about 0.2 occurrences511–510 Mya — about 0.2 occurrences510–509 Mya — about 0.1 occurrences509–508 Mya — about 0.0 occurrences508–507 Mya — about 0.0 occurrences507–506 Mya — about 0.0 occurrences539.4 Mya505.9 Mya

2 occurrences of Petrianna on record, most of them in the Cambrian. 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

1 formation

Buen — 83.05°N, 33.77°WBuen — 82.22°N, 29.97°W

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

Petrianna and its relatives

Cambrian

Where Petrianna and its relatives were recorded in the Cambrian.

Found in the same rock

4 taxa

The Paleobiology Database records 2 sites for Petrianna, and this reads all of them. The number is how many of those sites it was catalogued from too.

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 doi.org. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.

Media and terms

Media content0

No picture of Petrianna was found. Wikidata and iDigBio were searched and had none.

Wikipedia and Smithsonian Open Access did not answer, so this is what the others held rather than everything there is.

GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Petrianna, or no answer at all. This entry cannot say which.

No 3D scan of Petrianna 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.

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

Keep going

What may have been alongside itCambriidae through timeFormations of the CambrianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Siveter 1986