Wiwaxiidae

Wiwaxiidae

Uncredited · 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
MolluscaPBDB

Time the record covers

At least 15 million years on record.

The record covers at least 525.5 Mya to 509.7 Mya. No occurrence read is dated outside 538.8 Mya to 505.3 Mya.

Cambrian — about 29 of 29 occurrencesCambrian539–538 Mya — about 0.0 occurrences538–537 Mya — about 0.1 occurrences537–536 Mya — about 0.1 occurrences536–535 Mya — about 0.1 occurrences535–534 Mya — about 0.1 occurrences534–533 Mya — about 0.1 occurrences533–531 Mya — about 0.1 occurrences531–530 Mya — about 0.1 occurrences530–529 Mya — about 0.1 occurrences529–528 Mya — about 0.1 occurrences528–527 Mya — about 0.1 occurrences527–526 Mya — about 0.1 occurrences526–524 Mya — about 1 occurrence524–523 Mya — about 1 occurrence523–522 Mya — about 1 occurrence522–521 Mya — about 0.9 occurrences510–509 Mya — about 2 occurrences509–508 Mya — about 6 occurrences508–507 Mya — about 6 occurrences507–506 Mya — about 6 occurrences506–505 Mya — about 3 occurrences525.5 Mya509.7 Mya539.5 Mya504.6 Mya

29 occurrences of Wiwaxiidae 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

29 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

Burgess Shale — 51.44°N, 116.47°WMedvezhin — 70.67°N, 103.00°EManykay — 70.67°N, 103.00°E

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

Wiwaxiidae and its relatives

Cambrian

Where Wiwaxiidae and its relatives were recorded in the Cambrian.

Found in the same rock

196 taxa

The Paleobiology Database records 26 sites for Wiwaxiidae, 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 29 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 content1

Picture of Wiwaxiidae

Credit
nobody named on the record
Licence
not stated by the source
Commercial use
cannot be read from the licence given — check the record

No 3D scan was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.

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

Keep going

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

Occurrence data from the Paleobiology Database, CC BY 4.0. Walcott 1911